{"title":"Builder — Plant care","description":null,"products":[{"product_id":"seachem-flourish-tabs","title":"Seachem Flourish Tabs","description":"\u003cp\u003e\u003cstrong\u003ePush one into the gravel and your root-feeding plants are fed for months.\u003c\/strong\u003e Seachem Flourish Tabs are slow-release fertiliser tablets for the substrate of a planted freshwater aquarium, delivering iron, calcium, magnesium, sulphur, manganese, nitrogen, potassium and B-vitamins directly to the root zone — with no phosphate or nitrate to feed algae. They suit heavy root-feeders such as swords, crypts and vallisneria, and anyone who'd rather set and forget than dose liquid fertiliser daily.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeeds at the roots\u003c\/strong\u003e — nutrients release gradually through the enzymatic action of plant roots, reaching root-feeding species that don't take up much through their leaves.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo phosphate or nitrate\u003c\/strong\u003e — feeds plants without the algae risk that comes with dosing those nutrients into the water column.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSet and forget\u003c\/strong\u003e — one tab lasts 3–4 months, so there's no daily or weekly dosing routine to remember.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad nutrition\u003c\/strong\u003e — nitrogen, potassium, calcium, magnesium, sulphur, iron, manganese and hydrolysed yeast (amino acids, vitamins) in one tab.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWon't disrupt pH\u003c\/strong\u003e in normal tap water — though in very soft, unbuffered water the tabs behave mildly acidic, similar to peat.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePack\u003c\/th\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003cth\u003eBarcode\u003c\/th\u003e\n\u003cth\u003eCoverage\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e10 pack\u003c\/td\u003e\n\u003ctd\u003e724873-505\u003c\/td\u003e\n\u003ctd\u003e000116050500\u003c\/td\u003e\n\u003ctd\u003eTreats a 30 × 76 cm (12 × 30 in) plant bed, twice\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e40 pack\u003c\/td\u003e\n\u003ctd\u003e724874-507\u003c\/td\u003e\n\u003ctd\u003e000116050708\u003c\/td\u003e\n\u003ctd\u003eFour times the tab count of the 10 pack — at one tab per 10–15 cm radius (about 6 tabs per 40 L tank), that's roughly enough for a 250–270 L planted tank between restocks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eGuaranteed analysis (per 1 g tab)\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eNutrient\u003c\/th\u003e\n\u003cth\u003eContent\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal nitrogen (N)\u003c\/td\u003e\n\u003ctd\u003e0.4%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSoluble potash (K₂O)\u003c\/td\u003e\n\u003ctd\u003e0.15%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalcium (Ca)\u003c\/td\u003e\n\u003ctd\u003e0.15%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnesium (Mg)\u003c\/td\u003e\n\u003ctd\u003e0.1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSulphur (S)\u003c\/td\u003e\n\u003ctd\u003e15%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIron (Fe)\u003c\/td\u003e\n\u003ctd\u003e2%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManganese (Mn)\u003c\/td\u003e\n\u003ctd\u003e0.1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eDerived from potassium chloride, calcium sulphate, magnesium chloride, ferrous gluconate, magnesium sulphate, manganese sulphate and hydrolysed yeast.\u003c\/p\u003e\u003ch3\u003eDosage and directions\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eInsert one tab for every 10–15 cm radius of root-feeding plants, spaced evenly through the bed (a standard 40 L tank takes about 6 tabs).\u003c\/li\u003e\n\u003cli\u003ePush each tab roughly halfway into the substrate.\u003c\/li\u003e\n\u003cli\u003eReplace every 3–4 months for continued growth.\u003c\/li\u003e\n\u003cli\u003eCan be combined with a liquid Flourish product to cover leaf-feeding as well as root-feeding plants.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSuitable for freshwater planted aquariums, especially root-feeding species — swords, crypts, vallisneria and similar.\u003c\/li\u003e\n\u003cli\u003eNot a substitute for a liquid trace-element or macro-nutrient product for plants that feed mainly through their leaves.\u003c\/li\u003e\n\u003cli\u003eIn very soft or unbuffered water, the tabs act mildly acidic, similar to peat — worth knowing if you're keeping species sensitive to pH swings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eSet a reminder to replace tabs every 3–4 months. Avoid disturbing the substrate more than necessary when pushing new tabs in, particularly around established root systems.\u003c\/p\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-flourish-trace\"\u003eSeachem Flourish Trace\u003c\/a\u003e — covers trace elements for leaf-feeding growth alongside root-tab feeding.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-flourish-phosphorus\"\u003eSeachem Flourish Phosphorus\u003c\/a\u003e and \u003ca href=\"\/products\/seachem-flourish-potassium\"\u003eSeachem Flourish Potassium\u003c\/a\u003e — liquid dosing for plants that feed mainly through their leaves.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eCovered by your rights under Australian Consumer Law in addition to any manufacturer guarantee. Ships Australia-wide from North Lakes, QLD.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eWill these feed algae like liquid fertilisers can?\u003c\/h4\u003e\u003cp\u003eThey're formulated without phosphate or nitrate specifically to avoid feeding algae, and because they release at the root zone rather than into the water column, less nutrient ends up available to algae in the water.\u003c\/p\u003e\u003ch4\u003eHow many tabs does my tank need?\u003c\/h4\u003e\u003cp\u003eOne tab per 10–15 cm radius of root-feeding plants — as a guide, a standard 40 L tank takes about 6 tabs.\u003c\/p\u003e\u003ch4\u003eWill they change my water's pH?\u003c\/h4\u003e\u003cp\u003eNot in normal tap water. In very soft, unbuffered water they behave mildly acidic, similar to peat.\u003c\/p\u003e\u003ch4\u003eDo I still need a liquid fertiliser?\u003c\/h4\u003e\u003cp\u003eIf you keep leaf-feeding plants alongside root-feeders, yes — Flourish Tabs are a root-zone feed and don't replace a water-column trace-element or macro-nutrient product.\u003c\/p\u003e\u003ch4\u003eHow long does one tab last?\u003c\/h4\u003e\u003cp\u003eSeachem recommends replacing tabs every 3–4 months.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"10 pack","offer_id":54773857812771,"sku":"724873-505","price":32.95,"currency_code":"AUD","in_stock":false},{"title":"40 pack","offer_id":55335432519971,"sku":"724874-507","price":98.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/seachem-flourish-tabs-10135084663075-1-dq.webp?v=1790372898"},{"product_id":"seachem-plant-pack-enhancer-npk","title":"Seachem Plant Pack: Enhancer (NPK)","description":"\u003cp\u003e\u003cstrong\u003eThe three macro nutrients a planted tank runs short of first — dosed independently, not locked into one ratio.\u003c\/strong\u003e Seachem Plant Pack Enhancer (NPK) bundles 100 mL bottles of Flourish Nitrogen, Flourish Phosphorus and Flourish Potassium, so you can add exactly the macro nutrient your plants are short of, guided by test results rather than a fixed blend.\u003c\/p\u003e\n\u003cp\u003eIt suits medium to high-light planted aquariums where light is no longer the limiting factor and macro nutrients are — the stage most planted tanks reach once the easy wins from Plant Pack Fundamentals are already in place.\u003c\/p\u003e\n\u003ch3\u003eWhat's in the pack\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlourish Nitrogen (100 mL)\u003c\/strong\u003e — nitrate plus a complexed ammonium form plants prefer; no free ammonia reaches the water, since it only becomes available as plants take it up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlourish Phosphorus (100 mL)\u003c\/strong\u003e — a nitrate-free potassium phosphate solution (0.3% available P₂O₅), so you can lift phosphorus without pushing nitrate up alongside it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlourish Potassium (100 mL)\u003c\/strong\u003e — a concentrated potassium supplement, the macro nutrient most easily depleted in a fast-growing planted tank.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy dose N, P and K separately\u003c\/h3\u003e\n\u003cp\u003eA combined NPK product locks you into whatever ratio the bottle was mixed at — fine until one nutrient runs low while another is already at target. Dosing from three bottles means you add what a test kit or the plants themselves show is missing, rather than force-feeding a nutrient that's already sufficient.\u003c\/p\u003e\n\u003ch3\u003eDosage and directions\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBottle\u003c\/th\u003e\n\u003cth\u003eBeginner dose\u003c\/th\u003e\n\u003cth\u003eRaises\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlourish Nitrogen\u003c\/td\u003e\n\u003ctd\u003e2.5 mL per 160 L, twice weekly or as needed\u003c\/td\u003e\n\u003ctd\u003eNitrogen, roughly equivalent to 1 mg\/L nitrate per full dose across the tank\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlourish Phosphorus\u003c\/td\u003e\n\u003ctd\u003e2.5 mL per 80 L, once or twice weekly or as needed\u003c\/td\u003e\n\u003ctd\u003ePhosphorus by about 0.05 mg\/L (0.15 mg\/L phosphate) per dose\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlourish Potassium\u003c\/td\u003e\n\u003ctd\u003e5 mL (1 capful) per 125 L, 2–3 times weekly or as needed\u003c\/td\u003e\n\u003ctd\u003ePotassium by about 2 mg\/L per dose\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDose in response to deficiency signs — stunted growth or chlorosis for nitrogen, dark green but stalled growth for phosphorus, yellowing or pinholed older leaves for potassium — rather than on a fixed schedule regardless of what the plants are showing.\u003c\/p\u003e\n\u003ch3\u003eWhich bottle runs out first?\u003c\/h3\u003e\n\u003cp\u003eAll three bottles are 100 mL, but they don't last the same length of time, because each is dosed at a different rate. At the beginner dose above: Flourish Potassium is the first to empty, at around 2,500 L of dosed tank water; Flourish Phosphorus follows at around 3,200 L; Flourish Nitrogen lasts longest, to around 6,400 L. In practice that means you'll likely need a second bottle of Potassium before the other two run out — worth knowing before you assume the pack empties evenly.\u003c\/p\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e medium to high-light freshwater planted aquariums where macro nutrients, not light, are limiting growth. Safe around shrimp and other freshwater invertebrates at labelled doses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e reef or marine tanks. Not a substitute for testing — dosing phosphorus or nitrogen beyond what plants can use will feed algae, not plants.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSafety\u003c\/h3\u003e\n\u003cp\u003eOverdosing phosphorus or nitrogen beyond plant uptake capacity is the main risk with any macro-nutrient dosing — it feeds algae rather than plants. Monitor with a nitrate and phosphate test kit and dose to the reading, not just the calendar.\u003c\/p\u003e\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeachem Plant Pack Fundamentals\u003c\/strong\u003e — the trace element, iron and liquid carbon side of a complete dosing regime.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA nitrate and phosphate test kit\u003c\/strong\u003e — to dose to an actual reading rather than a guess.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndividual Flourish Nitrogen, Phosphorus or Potassium bottles\u003c\/strong\u003e — for topping up whichever nutrient in this pack you burn through first.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eCovered by Seachem's standard quality guarantee in addition to your rights under Australian Consumer Law. Standard shipping; no cold chain or special handling required.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eDo I need all three bottles at once?\u003c\/h4\u003e\n\u003cp\u003eOnly dose the nutrient your plants or test results show is low. Having all three on hand just means you're not caught short when a deficiency shows up.\u003c\/p\u003e\n\u003ch4\u003eWill this cause an algae bloom?\u003c\/h4\u003e\n\u003cp\u003eOnly if you dose past what your plants can use — test before and after dosing so nitrogen and phosphorus are being taken up, not accumulating.\u003c\/p\u003e\n\u003ch4\u003eWhat's the difference between this and Seachem Flourish (the all-in-one)?\u003c\/h4\u003e\n\u003cp\u003eFlourish is a broad-spectrum trace element supplement and deliberately low in nitrogen and phosphorus. This pack covers the three macro nutrients Flourish doesn't, dosed independently.\u003c\/p\u003e\n\u003ch4\u003eIs it reef safe?\u003c\/h4\u003e\n\u003cp\u003eNo — this pack is formulated for freshwater planted aquariums, not marine or reef systems.\u003c\/p\u003e\n\u003ch4\u003eWhich bottle should I expect to reorder first?\u003c\/h4\u003e\n\u003cp\u003eFlourish Potassium, at the standard dosing rates above — it's the first of the three to run out on a typical dosing schedule.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"Default Title","offer_id":54773859844387,"sku":"724903-1115","price":53.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/seachem-plant-pack-enhancer-npk-476259.webp?v=1790230840"},{"product_id":"seachem-plant-pack-fundamentals","title":"Seachem Plant Pack: Fundamentals","description":"\u003cp\u003e\u003cstrong\u003eEverything a new planted tank needs to get growing, in three 100 mL bottles.\u003c\/strong\u003e Seachem Plant Pack Fundamentals bundles Flourish, Flourish Iron and Flourish Excel — broad-spectrum trace elements, a dedicated iron supplement, and a liquid carbon source — as a starter dosing regime for a freshwater planted aquarium.\u003c\/p\u003e\n\u003cp\u003eIt's aimed at a first planted tank, or as a low-commitment way to trial Seachem's core plant line before buying full-size bottles. Once macro nutrients (nitrogen, phosphorus, potassium) become the limiting factor rather than trace elements, the Plant Pack Enhancer (NPK) is the next step.\u003c\/p\u003e\n\u003ch3\u003eWhat's in the pack\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlourish (100 mL)\u003c\/strong\u003e — the broad-spectrum growth supplement: calcium, magnesium, potassium and a wide trace-element spread, plus vitamins and amino acids. Deliberately low in nitrogen and phosphorus, so it doesn't feed algae.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlourish Iron (100 mL)\u003c\/strong\u003e — a complexed ferrous (Fe²⁺) iron supplement. Plants can use both ferric and ferrous iron but take up ferrous more readily, which is what keeps red-leaved plants red and new growth strong.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlourish Excel (100 mL)\u003c\/strong\u003e — a source of readily available organic carbon. Every plant needs a carbon source; Excel supplies it without CO₂ equipment, or as a supplement alongside CO₂ injection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDosage and directions\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBottle\u003c\/th\u003e\n\u003cth\u003eDose\u003c\/th\u003e\n\u003cth\u003eFrequency\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlourish\u003c\/td\u003e\n\u003ctd\u003e5 mL (1 capful) per 250 L\u003c\/td\u003e\n\u003ctd\u003eOnce or twice weekly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlourish Iron\u003c\/td\u003e\n\u003ctd\u003e5 mL (1 capful) per 200 L, or as needed to maintain ≈0.10 mg\/L iron\u003c\/td\u003e\n\u003ctd\u003eAs needed — test within 30 minutes of dosing, iron is used up fast\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlourish Excel\u003c\/td\u003e\n\u003ctd\u003e5 mL per 40 L on startup or after a water change over 40%; 5 mL per 200 L for maintenance\u003c\/td\u003e\n\u003ctd\u003eDaily or every other day (maintenance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eIf dosing Flourish alongside Flourish Trace, alternate the days rather than dosing both together.\u003c\/p\u003e\n\u003ch3\u003eWhich bottle runs out first?\u003c\/h3\u003e\n\u003cp\u003eNot the one you'd expect from the bottle sizes — all three are 100 mL, but Flourish Excel is dosed daily rather than weekly, so it empties in real time long before the other two. As a worked example on a 200 L tank: Flourish lasts roughly 20 doses at once-or-twice weekly (around 10–20 weeks); Flourish Iron is dosed to a test reading rather than a fixed schedule; Flourish Excel at the maintenance rate is a 5 mL dose every day or two, so a 100 mL bottle covers only around 20–40 days. Budget on reordering Excel well before the other two.\u003c\/p\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e new or lightly-stocked freshwater planted aquariums getting their first dosing routine started. Safe around shrimp and other freshwater invertebrates at labelled doses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e reef or marine tanks. Not a source of the macro nutrients nitrogen, phosphorus or potassium — see the Plant Pack Enhancer (NPK) once those become limiting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSafety\u003c\/h3\u003e\n\u003cp\u003eExcel is an organic carbon source rather than an inert additive — dose at the label rate rather than overdosing for a faster result, and keep an eye on sensitive shrimp or very soft-bodied invertebrates after starting, backing off the dose if you see any change in their behaviour. Iron is used up quickly in the water column; if you're testing to a target, test within about 30 minutes of dosing for an accurate reading.\u003c\/p\u003e\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeachem Plant Pack Enhancer (NPK)\u003c\/strong\u003e — the macro-nutrient side of a complete dosing regime, for once trace elements and carbon are no longer the limiting factor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAn iron test kit\u003c\/strong\u003e — iron depletes fast, so a quick test is more useful here than for most other dosed nutrients.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-size Flourish, Flourish Iron or Flourish Excel bottles\u003c\/strong\u003e — once you know this line suits your tank and want to stop refilling from a 100 mL starter bottle.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eCovered by Seachem's standard quality guarantee in addition to your rights under Australian Consumer Law. Standard shipping; no cold chain or special handling required.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eIs this enough to fully dose a planted tank long-term?\u003c\/h4\u003e\n\u003cp\u003eIt's a starter kit at 100 mL per bottle — enough to trial the line and get a new tank started, but expect to move to full-size bottles once you've settled on a dosing routine.\u003c\/p\u003e\n\u003ch4\u003eWhich bottle will I need to reorder first?\u003c\/h4\u003e\n\u003cp\u003eAlmost always Flourish Excel — it's dosed daily rather than weekly, so a 100 mL bottle runs out much faster in real time than the other two.\u003c\/p\u003e\n\u003ch4\u003eDoes this pack include the macro nutrients (NPK)?\u003c\/h4\u003e\n\u003cp\u003eNo — Flourish is deliberately low in nitrogen and phosphorus. Add the Plant Pack Enhancer (NPK) once macro nutrients, not trace elements, are limiting growth.\u003c\/p\u003e\n\u003ch4\u003eIs Flourish Excel safe with shrimp?\u003c\/h4\u003e\n\u003cp\u003eMost aquarists dose it around shrimp without issue at the label rate, but some shrimp and soft-bodied invertebrates are sensitive — start at the standard dose and watch their behaviour rather than dosing extra for a faster result.\u003c\/p\u003e\n\u003ch4\u003eWhy test iron so soon after dosing?\u003c\/h4\u003e\n\u003cp\u003eIron is taken up by plants and oxidised quickly, so a reading taken more than 30 minutes after dosing will already read lower than what you actually added.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"Default Title","offer_id":54773860106531,"sku":"724902-1105","price":53.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/seachem-plant-pack-fundamentals-509027.webp?v=1790230840"},{"product_id":"aquavitro-propel-350ml","title":"AquaVitro Propel 350ml","description":"\u003cp\u003e\u003cstrong\u003eFeeds plant leaves the iron they can actually use.\u003c\/strong\u003e AquaVitro Propel is a concentrated 10,000 mg\/L ferrous iron supplement for planted freshwater aquariums, sold here in a 350 mL bottle. It corrects the pale, yellowing new growth of iron-starved plants by supplying iron already in its ferrous form, so the plant spends no energy converting it before use.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e10,000 mg\/L ferrous iron\u003c\/strong\u003e - a concentrated source of iron already in the ferrous (Fe2+) form, the form plants take up directly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImmediate and time-released iron together\u003c\/strong\u003e - ferrous gluconate acts straight away, and a slow-release component keeps iron available between doses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in reducing agent\u003c\/strong\u003e - converts any ferric iron already in the tank back to the ferrous form plants can use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTreats roughly 14,000 litres\u003c\/strong\u003e - the 350 mL bottle doses out to that much treated aquarium water over its life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo CO2 system required to see the benefit\u003c\/strong\u003e - iron deficiency shows up as pale new leaves even in a well-lit, well-fertilised tank, and this addresses that specific gap.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003ctd\u003e350 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConcentration\u003c\/th\u003e\n\u003ctd\u003e10,000 mg\/L ferrous iron\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eActive constituents\u003c\/th\u003e\n\u003ctd\u003eFerrous gluconate, time-released iron complex, ferric-to-ferrous reducing agent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTarget dose rate\u003c\/th\u003e\n\u003ctd\u003eMaintains approximately 0.10 mg\/L iron in the aquarium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater, planted aquariums\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDosing cap supplied\u003c\/th\u003e\n\u003ctd\u003e7 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch3\u003eDosage and directions\u003c\/h3\u003e\n\u003cp\u003eUse the 7 mL cap supplied with this 350 mL bottle. Dose 7 mL per 280 L (70 US gallons) of aquarium water, three times a week, or as needed to hold iron at around 0.10 mg\/L. Shake before use. Increase or reduce the dose to match how quickly your plants are drawing iron down - fast-growing stem plants under strong light use it faster than a lightly planted community tank.\u003c\/p\u003e\n\u003cp\u003eA liquid iron test kit is the only reliable way to know where your tank actually sits between doses; visual symptoms lag behind the numbers by several days.\u003c\/p\u003e\n\n\u003ch3\u003eHow far a bottle goes\u003c\/h3\u003e\n\u003cp\u003eAt 7 mL per 280 L, one 350 mL bottle doses out to roughly 14,000 litres of treated aquarium water before it runs out.\u003c\/p\u003e\n\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSuitable for:\u003c\/strong\u003e planted freshwater aquariums showing pale or yellowing new leaves, tanks running CO2 and high light where plant growth quickly draws iron down, and any freshwater setup on a regular fertiliser routine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e reef and FOWLR marine tanks, where dosed iron has no established role in AquaVitro's own product information. Use a marine-specific trace element supplement instead in those systems.\u003c\/p\u003e\n\n\u003ch3\u003eSafety\u003c\/h3\u003e\n\u003cp\u003eOverdosing iron can encourage algae growth rather than plant growth, since algae will use any iron plants don't. Dose to the schedule and test rather than adding extra \"to be sure.\" Keep the bottle away from unsupervised aquariums with grazing invertebrates that may be sensitive to concentrated trace elements.\u003c\/p\u003e\n\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA liquid iron test kit, to confirm the 0.10 mg\/L target is being held between doses rather than assumed.\u003c\/li\u003e\n\u003cli\u003eA broader macro-nutrient fertiliser (nitrogen, phosphorus, potassium), since iron alone will not fix a tank that's also short on the bulk nutrients plants need.\u003c\/li\u003e\n\u003cli\u003eCO2 injection equipment, where light and iron are already in place and carbon is the next limiting factor for growth.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eAquaVitro does not publish a warranty term for its liquid supplements; your rights under the Australian Consumer Law apply regardless of anything the manufacturer does or doesn't state. This is a standard 350 mL liquid and ships as a normal parcel - no special freight class applies.\u003c\/p\u003e\n\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eHow do I know if my plants are iron deficient?\u003c\/h4\u003e\n\u003cp\u003eThe classic sign is interveinal chlorosis on new leaves - the leaf turns pale or yellow while the veins stay green - because iron doesn't move from old growth to new growth inside the plant the way some other nutrients do.\u003c\/p\u003e\n\u003ch4\u003eCan I dose this alongside CO2 and other fertilisers?\u003c\/h4\u003e\n\u003cp\u003eYes. Propel supplies iron only, so it's designed to be dosed alongside separate macro-nutrient fertilisers and CO2 rather than replacing them.\u003c\/p\u003e\n\u003ch4\u003eWill this discolour my water?\u003c\/h4\u003e\n\u003cp\u003eConcentrated iron supplements can tint water very slightly for a few hours after dosing, which clears as it's taken up or filtered. It is not a sign the dose was wrong.\u003c\/p\u003e\n\u003ch4\u003eIs this reef safe?\u003c\/h4\u003e\n\u003cp\u003eAquaVitro markets Propel as a planted freshwater product, not a reef supplement, so we can't confirm a safe dose for invertebrates or corals and don't recommend using it in a marine system.\u003c\/p\u003e","brand":"AquaVitro","offers":[{"title":"Default Title","offer_id":55242265362723,"sku":"AA0835","price":49.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/aquavitro-propel-350ml-43106862694691.webp?v=1790231144"},{"product_id":"api-leaf-zone","title":"API Leaf Zone","description":"\u003cp\u003e\u003cstrong\u003eIron and potassium your plants take up straight through the leaf, not just the roots.\u003c\/strong\u003e API Leaf Zone is a liquid fertiliser for freshwater planted aquariums, supplying chelated iron and potassium that foliage absorbs directly. Dosed weekly at 5 mL per 10 US gallons (37.9 L), it's aimed at stem plants and other fast growers that feed through their leaves as much as their roots. It's freshwater only, and Nick's stocks it in 237 mL, 473 mL and 3.8 L.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChelated iron and potassium\u003c\/strong\u003e — the two nutrients most likely to run short in a planted freshwater tank, in a form leaves can take up directly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeekly dosing\u003c\/strong\u003e — 5 mL per 10 US gallons (37.9 L), measured with the bottle's dosing cap.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated safe with fish and freshwater invertebrates\u003c\/strong\u003e — API states it's safe to use with all freshwater invertebrates, including shrimp and snails.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAround 1c per litre of tank water dosed\u003c\/strong\u003e on the 237 mL and 473 mL bottles, and under 1c per litre on the 3.8 L — see the pack comparison below.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree pack sizes\u003c\/strong\u003e — 237 mL, 473 mL and a 3.8 L refill for larger planted setups or multiple tanks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow much do I use?\u003c\/h3\u003e\n\u003cp\u003eAPI's label rate is 5 mL for every 10 US gallons (37.9 L), applied once a week using the bottle's built-in dosing cap. Overdosing feeds algae as readily as it feeds plants, so measure rather than estimate.\u003c\/p\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eAquarium volume\u003c\/th\u003e\n\u003cth\u003eWeekly dose\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e38 L\u003c\/td\u003e\n\u003ctd\u003e5 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e75 L\u003c\/td\u003e\n\u003ctd\u003e10 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e150 L\u003c\/td\u003e\n\u003ctd\u003e20 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e300 L\u003c\/td\u003e\n\u003ctd\u003e40 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eLiquid iron and potassium fertiliser\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eActive nutrients\u003c\/th\u003e\n\u003ctd\u003eChelated iron, potassium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDose rate\u003c\/th\u003e\n\u003ctd\u003e5 mL per 10 US gallons (37.9 L), weekly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack sizes sold here\u003c\/th\u003e\n\u003ctd\u003e237 mL, 473 mL, 3.8 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFish safety\u003c\/th\u003e\n\u003ctd\u003eSafe to use in tanks with fish, per API's label\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInvertebrate safety\u003c\/th\u003e\n\u003ctd\u003eSafe with freshwater invertebrates including shrimp and snails, per API's label\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAlgae caution\u003c\/th\u003e\n\u003ctd\u003eStimulates algae growth; API advises dosing lightly to avoid triggering a bloom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFreight\u003c\/th\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch3\u003eWhich pack size do I need?\u003c\/h3\u003e\n\u003cp\u003eCost per litre of tank water dosed, calculated from the current price and API's label dose rate:\u003c\/p\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePack\u003c\/th\u003e\n\u003cth\u003eTreats (at 5 mL per 37.9 L)\u003c\/th\u003e\n\u003cth\u003eCost per litre dosed\u003c\/th\u003e\n\u003cth\u003eSuits\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e237 mL\u003c\/td\u003e\n\u003ctd\u003e≈1,794 L\u003c\/td\u003e\n\u003ctd\u003e1c per litre\u003c\/td\u003e\n\u003ctd\u003eOne or two small-to-medium planted tanks, dosed weekly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e473 mL\u003c\/td\u003e\n\u003ctd\u003e≈3,580 L\u003c\/td\u003e\n\u003ctd\u003e1c per litre\u003c\/td\u003e\n\u003ctd\u003eA single larger planted display, or a couple of medium tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3.8 L\u003c\/td\u003e\n\u003ctd\u003e≈28,769 L\u003c\/td\u003e\n\u003ctd\u003eUnder 1c per litre\u003c\/td\u003e\n\u003ctd\u003eMultiple planted tanks or a fish room on a weekly dosing routine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eAll three sizes work out to roughly a cent or less per litre dosed at the current price — the 3.8 L is the cheapest per litre if you're dosing several tanks and won't let the bottle go stale before you use it.\u003c\/p\u003e\n\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSuitable for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFreshwater planted aquariums, especially fast-growing stem plants\u003c\/li\u003e\n\u003cli\u003eTanks that also hold fish and freshwater invertebrates such as shrimp and snails\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMarine or reef aquariums — this is a freshwater-only product\u003c\/li\u003e\n\u003cli\u003eTanks already struggling with an algae bloom — API's own label notes the fertiliser stimulates algae growth, so it's the wrong product to reach for until the bloom is under control\u003c\/li\u003e\n\u003cli\u003eA substitute for root fertilisation — heavy root feeders such as swords and crypts still need a substrate fertiliser or root tabs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIngredients\u003c\/h3\u003e\n\u003cp\u003eAPI's packaging and product page state the active nutrients as chelated iron and potassium. API does not publish an exact percentage breakdown for either nutrient on its consumer-facing product page, so no guaranteed-analysis figures are shown here — checked 7 August 2026.\u003c\/p\u003e\n\n\u003ch3\u003eSafety and handling\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKeep out of reach of children.\u003c\/li\u003e\n\u003cli\u003eDose with the bottle's measuring cap rather than by eye.\u003c\/li\u003e\n\u003cli\u003eIncrease the dose gradually if you're not already running a fertiliser, and watch for algae response over the first few weeks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-prime\"\u003eSeachem Prime\u003c\/a\u003e — for conditioning the water changes that go alongside a fertilising routine.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/api-freshwater-master-multi-test-kit-5-in-1\"\u003eAPI Freshwater Master Multi Test Kit 5 in 1\u003c\/a\u003e — keep an eye on nitrate and pH while you're dosing a fertiliser.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/marina-floating-glass-thermometer\"\u003eMarina Floating Glass Thermometer\u003c\/a\u003e — plant growth tracks temperature as much as it tracks nutrients.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eThis is a consumable, so no manufacturer warranty period applies. That does not affect your rights under the Australian Consumer Law: if the product is faulty, unsafe or not as described, you are entitled to a remedy.\u003c\/p\u003e\n\u003cp\u003eAll three pack sizes ship as standard freight.\u003c\/p\u003e\n\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eWill Leaf Zone cause an algae bloom?\u003c\/h4\u003e\n\u003cp\u003eIt can if overdosed. API's own label states the product stimulates algae growth, and recommends dosing lightly and only as directed rather than assuming more is better.\u003c\/p\u003e\n\u003ch4\u003eIs Leaf Zone safe with shrimp?\u003c\/h4\u003e\n\u003cp\u003eYes. API states Leaf Zone is safe to use with all freshwater invertebrates, including shrimp and snails, at the labelled dose.\u003c\/p\u003e\n\u003ch4\u003eCan I use Leaf Zone in a marine tank?\u003c\/h4\u003e\n\u003cp\u003eNo. Leaf Zone is formulated and labelled for freshwater aquariums with freshwater plants only.\u003c\/p\u003e\n\u003ch4\u003eDo I need a root fertiliser as well?\u003c\/h4\u003e\n\u003cp\u003eIf you're growing root feeders such as swords or crypts, yes — Leaf Zone feeds through the leaf, not the substrate, so heavy root feeders still benefit from a separate root tab or substrate fertiliser.\u003c\/p\u003e\n\u003ch4\u003eHow much does a 473 mL bottle actually cost to run?\u003c\/h4\u003e\n\u003cp\u003eAt the current price and API's label dose, the 473 mL bottle works out to around 1c per litre of tank water dosed, treating roughly 3,580 litres across the life of the bottle at one dose a week.\u003c\/p\u003e","brand":"API","offers":[{"title":"237 mL","offer_id":55244124651811,"sku":null,"price":29.95,"currency_code":"AUD","in_stock":true},{"title":"473 mL","offer_id":55244124684579,"sku":null,"price":42.95,"currency_code":"AUD","in_stock":true},{"title":"3.8 L","offer_id":55335279886627,"sku":"AA2584","price":81.85,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/api-leaf-zone-43875866018083.webp?v=1790239780"},{"product_id":"seachem-flourish","title":"Seachem Flourish","description":"\u003cp\u003e\u003cstrong\u003eFeeds the trace elements a planted tank strips out of the water column.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSeachem Flourish is a comprehensive supplement of trace and micro elements — iron, manganese, boron, zinc and more — for freshwater planted aquariums, dosed once or twice a week to replace what fast-growing plants consume. It carries calcium, magnesium and potassium too, without the heavy nitrogen or phosphate load of a fish-food-driven tank.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad trace-element base\u003c\/strong\u003e — iron, manganese, boron, zinc, copper, cobalt and molybdenum in one dose, plus calcium, magnesium and potassium.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow nitrogen and phosphate\u003c\/strong\u003e — 0.07% total nitrogen and 0.01% phosphate, so it won't feed algae the way a nitrogen-heavy fertiliser can.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShrimp-safe at the recommended dose\u003c\/strong\u003e — used across community and shrimp-keeping planted tanks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConcentrated\u003c\/strong\u003e — a 50 mL bottle treats roughly 2,500 L across its dosing life, working out to under a cent per litre.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart of a modular system\u003c\/strong\u003e — pairs with Flourish Excel for a carbon source and Flourish Tabs for root feeders, so dosing can be tuned per tank.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003ctd\u003e50 mL \/ 100 mL \/ 250 mL \/ 500 mL \/ 2 L \/ 4 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eForm\u003c\/th\u003e\n\u003ctd\u003eLiquid concentrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater, planted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDerived from\u003c\/th\u003e\n\u003ctd\u003ePotassium chloride, calcium chloride, copper sulphate, magnesium chloride, ferrous gluconate, cobalt sulphate, magnesium sulphate, manganese sulphate, boric acid, sodium molybdate, zinc sulphate, protein hydrolysates\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGuaranteed analysis (per g)\u003c\/th\u003e\n\u003ctd\u003eTotal nitrogen 0.07% · Phosphate 0.01% · Potassium 0.37% · Calcium 0.14% · Magnesium 0.11% · Sulphur 0.2773% · Boron 0.009% · Chlorine 1.15% · Cobalt 0.0004% · Copper 0.0001% · Iron 0.32% · Manganese 0.0118% · Molybdenum 0.0009% · Sodium 0.13% · Zinc 0.0007%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStandard dose\u003c\/th\u003e\n\u003ctd\u003e5 mL (1 capful) per 250 L, once or twice weekly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStorage\u003c\/th\u003e\n\u003ctd\u003eRefrigeration recommended from 3 months after opening\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eWhich size do I need?\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePack\u003c\/th\u003e\n\u003cth\u003eWater treated per dose cycle\u003c\/th\u003e\n\u003cth\u003eCost per litre treated\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e50 mL\u003c\/td\u003e\n\u003ctd\u003e2,500 L\u003c\/td\u003e\n\u003ctd\u003eunder 1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 mL\u003c\/td\u003e\n\u003ctd\u003e5,000 L\u003c\/td\u003e\n\u003ctd\u003eunder 1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e250 mL\u003c\/td\u003e\n\u003ctd\u003e12,500 L\u003c\/td\u003e\n\u003ctd\u003eunder 1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e500 mL\u003c\/td\u003e\n\u003ctd\u003e25,000 L\u003c\/td\u003e\n\u003ctd\u003eunder 1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 L\u003c\/td\u003e\n\u003ctd\u003e100,000 L\u003c\/td\u003e\n\u003ctd\u003eunder 1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4 L\u003c\/td\u003e\n\u003ctd\u003e200,000 L\u003c\/td\u003e\n\u003ctd\u003eunder 1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eEvery size works out to a fraction of a cent per litre dosed — the deciding factor is tank size and how often the bottle gets used before the cap thread clogs, not price per litre.\u003c\/p\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e freshwater planted aquariums, community tanks with live plants, tanks also keeping shrimp at the recommended dose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e fish-only tanks with no live plants — the trace elements have nothing to be taken up and will simply accumulate.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDosage and directions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAdd 5 mL (1 capful) per 250 L, once or twice a week.\u003c\/li\u003e\n\u003cli\u003eEach thread of the cap holds roughly 1 mL, for finer dosing in smaller tanks.\u003c\/li\u003e\n\u003cli\u003eRefrigerate the bottle from 3 months after first opening.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSafety\u003c\/h3\u003e\n\u003cp\u003eAquarium use only — keep away from children. Contains 1,5-pentanedial (a preservative), which may cause an allergic reaction on skin contact; rinse off if it happens.\u003c\/p\u003e\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-flourish-excel\"\u003eSeachem Flourish Excel\u003c\/a\u003e — a liquid carbon source that pairs with Flourish's mineral dose rather than duplicating it.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-flourish-tabs\"\u003eSeachem Flourish Tabs\u003c\/a\u003e — root tabs for heavy root feeders that Flourish's water-column dosing doesn't reach.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-flourish-potassium\"\u003eSeachem Flourish Potassium\u003c\/a\u003e — for tanks that need extra potassium beyond what Flourish alone supplies.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-equilibrium\"\u003eSeachem Equilibrium\u003c\/a\u003e — raises general hardness in RO\/RO-DI setups, complementing Flourish's trace-element dose.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eCovered by Seachem's standard manufacturer warranty in addition to your rights under Australian Consumer Law. Standard freight for bottles up to 500 mL; the 2 L and 4 L sizes ship as a standard parcel, no special handling required.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eWill Flourish feed algae?\u003c\/h4\u003e\n\u003cp\u003eAt the recommended dose it's unlikely to — nitrogen and phosphate are both under 0.1% of the formula. Algae blooms in planted tanks are far more often light or CO2 related than caused by trace-element dosing.\u003c\/p\u003e\n\u003ch4\u003eDo I still need a separate iron supplement?\u003c\/h4\u003e\n\u003cp\u003eFlourish already contains iron (0.32%), but heavily planted or high-tech tanks often run through it fast — Flourish alone is usually enough for low-to-medium light setups, with Flourish Iron as a top-up for demanding ones.\u003c\/p\u003e\n\u003ch4\u003eIs it safe with shrimp?\u003c\/h4\u003e\n\u003cp\u003eYes, dosed as directed it's used across shrimp-keeping planted tanks.\u003c\/p\u003e\n\u003ch4\u003eWhy does the bottle need refrigerating?\u003c\/h4\u003e\n\u003cp\u003eAfter 3 months open, refrigeration helps preserve the trace-element mix; unopened bottles don't need it.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"50 mL","offer_id":55244153913635,"sku":null,"price":12.95,"currency_code":"AUD","in_stock":false},{"title":"100 mL","offer_id":55244153946403,"sku":null,"price":18.95,"currency_code":"AUD","in_stock":false},{"title":"250 mL","offer_id":55244153979171,"sku":null,"price":27.95,"currency_code":"AUD","in_stock":false},{"title":"500 mL","offer_id":55244154011939,"sku":null,"price":43.95,"currency_code":"AUD","in_stock":false},{"title":"2 L","offer_id":55244154044707,"sku":null,"price":150.95,"currency_code":"AUD","in_stock":false},{"title":"4 L","offer_id":55244154077475,"sku":null,"price":268.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/seachem-flourish-43160359207203.webp?v=1790238163"},{"product_id":"seachem-flourish-excel","title":"Seachem Flourish Excel","description":"\u003cp\u003e\u003cstrong\u003eGive your plants carbon without adding a pressurised CO2 system.\u003c\/strong\u003e Seachem Flourish Excel is a bioavailable organic carbon source for the planted aquarium — a source of photosynthetic intermediates that plants can take up directly, used either as a full alternative to injected CO2 in low-to-medium light tanks or as a supplement alongside CO2 in higher-light setups. It also carries iron-reducing properties that help keep dosed iron in the ferrous (plant-available) state.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorks without a CO2 system\u003c\/strong\u003e — supplies bioavailable carbon that many plants can use in place of dissolved CO2 gas.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso suits CO2-injected tanks\u003c\/strong\u003e — dosed alongside pressurised CO2 in demanding, higher-light setups as a supplementary carbon source.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelps some algae types\u003c\/strong\u003e — commonly used as part of an algae-control routine, though it is not an algaecide.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeeps iron plant-available\u003c\/strong\u003e — its reducing action helps hold dosed iron in the ferrous (Fe²⁺) state plants can absorb.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix bottle sizes\u003c\/strong\u003e — from a 50 mL trial size up to a 4 L bulk bottle for larger collections of tanks.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eBioavailable organic carbon supplement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater, planted tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSizes\u003c\/th\u003e\n\u003ctd\u003e50 mL, 100 mL, 250 mL, 500 mL, 2 L, 4 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInitial dose\u003c\/th\u003e\n\u003ctd\u003e5 mL (1 capful) per 40 L, on first use or after a water change over 40%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaintenance dose\u003c\/th\u003e\n\u003ctd\u003e5 mL (1 capful) per 200 L, daily or every other day\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCarbon availability\u003c\/th\u003e\n\u003ctd\u003eRemains available to plants for up to 24 hours after dosing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eWhich size do I need?\u003c\/h3\u003e\u003cp\u003eThe dose is the same per litre regardless of bottle size, so pick a size for how long you want between refills rather than tank size alone. Every size works out to under 1c per litre treated at the daily maintenance dose — the 4 L bottle is the cheapest per litre of the six, the 50 mL bottle the most expensive, though even the smallest bottle costs a fraction of a cent per treated litre. A single 100 L tank dosed daily at maintenance rate goes through roughly 2.5 mL a day, so a 250 mL bottle lasts about three months; step up to 500 mL, 2 L or 4 L for multiple tanks or longer intervals between orders.\u003c\/p\u003e\u003ch3\u003eDosage and directions\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFirst use, or after a water change over 40%: dose 5 mL per 40 L.\u003c\/li\u003e\n\u003cli\u003eOngoing maintenance: dose 5 mL per 200 L daily, or every other day.\u003c\/li\u003e\n\u003cli\u003eEach thread on the cap measures approximately 1 mL for fine adjustment on smaller tanks.\u003c\/li\u003e\n\u003cli\u003eSensitive species such as Anacharis (Egeria) can react to daily dosing — switch to every-other-day if you see leaf damage, and reduce the dose rather than stopping altogether.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSuitable for freshwater planted tanks run with or without pressurised CO2.\u003c\/li\u003e\n\u003cli\u003eNot a substitute for macro and micronutrient dosing — Excel supplies carbon only; plants still need nitrogen, phosphorus, potassium and trace elements from products such as Flourish, Flourish Nitrogen and Flourish Iron.\u003c\/li\u003e\n\u003cli\u003eSome stem plants are sensitive to daily dosing at full rate — start conservatively and watch new growth for the first week.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-flourish\"\u003eSeachem Flourish\u003c\/a\u003e — the base trace element supplement Excel is designed to be dosed alongside.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-flourish-iron\"\u003eSeachem Flourish Iron\u003c\/a\u003e — for red and iron-hungry stem plants.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-flourish-nitrogen\"\u003eSeachem Flourish Nitrogen\u003c\/a\u003e — nitrogen dosing for demanding planted tanks.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eSeachem doesn't publish a fixed warranty term on consumable dosing products; your purchase is still covered by the consumer guarantees under Australian Consumer Law. Ships as a standard parcel — no cold chain or special handling required.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eCan Flourish Excel replace CO2 injection completely?\u003c\/h4\u003e\u003cp\u003eIn low-to-medium light tanks, yes, many aquarists run Excel as their only carbon source. In high-light or heavily planted tanks, pressurised CO2 still delivers more carbon than liquid dosing can match, and Excel is better used as a supplement in that case.\u003c\/p\u003e\u003ch4\u003eWill Excel hurt my shrimp or fish?\u003c\/h4\u003e\u003cp\u003eDosed at the label rate it is broadly considered safe for fish. Some aquarists report sensitivity in shrimp and in soft-leaved plants like Vallisneria and Anacharis at full daily dose — dose to the lower end of the range and watch your livestock and plants for the first few doses.\u003c\/p\u003e\u003ch4\u003eHow long does one dose last?\u003c\/h4\u003e\u003cp\u003eSeachem states the carbon remains available to plants for up to 24 hours, which is why the maintenance dose is applied daily or every other day rather than weekly.\u003c\/p\u003e\u003ch4\u003eDo I still need to dose Flourish and Flourish Iron?\u003c\/h4\u003e\u003cp\u003eYes. Excel supplies carbon only — it does not contain nitrogen, phosphorus, potassium or trace elements, so a full-spectrum planted tank still needs a base fertiliser alongside it.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"50 mL","offer_id":55244154175779,"sku":null,"price":12.95,"currency_code":"AUD","in_stock":false},{"title":"100 mL","offer_id":55244154208547,"sku":null,"price":18.95,"currency_code":"AUD","in_stock":false},{"title":"250 mL","offer_id":55244154241315,"sku":null,"price":27.95,"currency_code":"AUD","in_stock":true},{"title":"500 mL","offer_id":55244154274083,"sku":null,"price":43.95,"currency_code":"AUD","in_stock":true},{"title":"2 L","offer_id":55244154306851,"sku":null,"price":150.95,"currency_code":"AUD","in_stock":false},{"title":"4 L","offer_id":55244154339619,"sku":null,"price":278.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/seachem-flourish-excel-43160359239971.webp?v=1790238164"},{"product_id":"seachem-flourish-iron","title":"Seachem Flourish Iron","description":"\u003cp\u003e\u003cstrong\u003eFeed the deficiency your plants are already showing you.\u003c\/strong\u003e Seachem Flourish Iron is a concentrated ferrous gluconate iron supplement for the planted aquarium, formulated to correct the pale new growth and interveinal yellowing (chlorosis) that shows up when iron runs short — and to deepen the red colour in iron-hungry stem plants once the deficiency is fixed.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHighly bioavailable iron\u003c\/strong\u003e — supplied as ferrous gluconate at 10,000 mg\/L, a form plants take up readily.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrects chlorosis\u003c\/strong\u003e — targets the yellowing between leaf veins on new growth that signals iron deficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeepens red and green colouration\u003c\/strong\u003e — iron availability drives the intensity of red pigment in species like Rotala and Ludwigia.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon as a bonus\u003c\/strong\u003e — the gluconate carrier itself supplies a small amount of organic carbon alongside the iron.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix bottle sizes\u003c\/strong\u003e — 50 mL through to 4 L.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eChelated iron supplement (ferrous gluconate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIron concentration\u003c\/th\u003e\n\u003ctd\u003e10,000 mg\/L (1% Fe by weight)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater, planted tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSizes\u003c\/th\u003e\n\u003ctd\u003e50 mL, 100 mL, 250 mL, 500 mL, 2 L, 4 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStandard dose\u003c\/th\u003e\n\u003ctd\u003e5 mL (1 capful) per 200 L, raises iron by approximately 0.25 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTarget level\u003c\/th\u003e\n\u003ctd\u003eApproximately 0.10 mg\/L iron, maintained by daily dosing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eIngredients\u003c\/h3\u003e\u003cp\u003eDerived from: Ferrous Gluconate.\u003c\/p\u003e\u003ctable\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003cth\u003eIron (Fe)\u003c\/th\u003e\n\u003ctd\u003e1% w\/w (10,000 mg\/L in solution)\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eWhich size do I need?\u003c\/h3\u003e\u003cp\u003eEvery size works out to under 1c per litre treated at the standard dose — the 4 L bottle is the cheapest per litre of the six, the 50 mL the most expensive, and even the smallest bottle still costs a fraction of a cent per treated litre. Because iron depletes within the day (test within 30 minutes of dosing to see the peak), Flourish Iron is dosed daily rather than weekly — a 100 L tank at standard dose uses roughly 2.5 mL a day, so a 250 mL bottle lasts about three months of daily dosing.\u003c\/p\u003e\u003ch3\u003eDosage and directions\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDose 5 mL per 200 L daily, or as needed against test results and visible deficiency signs.\u003c\/li\u003e\n\u003cli\u003eEach thread on the cap measures approximately 1 mL for smaller tanks.\u003c\/li\u003e\n\u003cli\u003eTest with Seachem MultiTest Iron within 30 minutes of dosing — iron depletes quickly in a planted, filtered tank, so a same-day test after dosing is the only reliable read on how much is actually present.\u003c\/li\u003e\n\u003cli\u003eWatch new leaf growth, not old leaves — chlorosis shows first on new shoots.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSuitable for freshwater planted tanks showing chlorosis or grown for red-leaved species.\u003c\/li\u003e\n\u003cli\u003eNot a complete fertiliser — Iron supplies iron only; nitrogen, phosphorus, potassium and other trace elements still need to come from a base fertiliser such as Flourish.\u003c\/li\u003e\n\u003cli\u003eOverdosing iron can encourage algae in tanks without adequate plant mass to use it — dose to test results, not on a fixed schedule alone.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-flourish\"\u003eSeachem Flourish\u003c\/a\u003e — base trace elements alongside targeted iron dosing.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-flourish-excel\"\u003eSeachem Flourish Excel\u003c\/a\u003e — liquid carbon, dosed on its own schedule.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-flourish-nitrogen\"\u003eSeachem Flourish Nitrogen\u003c\/a\u003e — nitrogen dosing for demanding planted tanks.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eSeachem doesn't publish a fixed warranty term on consumable dosing products; your purchase is still covered by the consumer guarantees under Australian Consumer Law. Ships as a standard parcel — no cold chain or special handling required.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eHow do I know if my plants are iron deficient?\u003c\/h4\u003e\u003cp\u003eLook at the newest leaves first. Yellowing between the veins while the veins themselves stay green (chlorosis) on new growth is the classic sign — iron is immobile in the plant, so old leaves stay green even when new growth is starving.\u003c\/p\u003e\u003ch4\u003eWhy dose daily instead of weekly like base Flourish?\u003c\/h4\u003e\u003cp\u003eIron depletes rapidly once dosed — Seachem recommends testing within 30 minutes to see the true peak. A weekly dose would spend most of the week at a level too low for plants to use, so Iron is designed for daily, smaller doses instead.\u003c\/p\u003e\u003ch4\u003eCan I overdose Flourish Iron?\u003c\/h4\u003e\u003cp\u003eDosing well above the target of around 0.10 mg\/L doesn't help plants take up more — iron uptake is limited by demand, not supply — and excess iron in a tank without enough plant mass to use it can contribute to algae growth. Dose to test results.\u003c\/p\u003e\u003ch4\u003eIs Flourish Iron reef or marine safe?\u003c\/h4\u003e\u003cp\u003eIt's formulated and marketed for freshwater planted aquariums; Seachem does not publish marine dosing guidance for this product.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"50 mL","offer_id":55244154372387,"sku":null,"price":13.95,"currency_code":"AUD","in_stock":false},{"title":"100 mL","offer_id":55244154405155,"sku":null,"price":18.95,"currency_code":"AUD","in_stock":true},{"title":"250 mL","offer_id":55244154437923,"sku":null,"price":27.95,"currency_code":"AUD","in_stock":true},{"title":"500 mL","offer_id":55244154470691,"sku":null,"price":43.95,"currency_code":"AUD","in_stock":true},{"title":"2 L","offer_id":55244154503459,"sku":null,"price":150.95,"currency_code":"AUD","in_stock":false},{"title":"4 L","offer_id":55244154536227,"sku":null,"price":279.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/seachem-flourish-iron-43160359272739.webp?v=1790238164"},{"product_id":"seachem-flourish-trace","title":"Seachem Flourish Trace","description":"\u003cp\u003e\u003cstrong\u003ePlanted tanks run out of trace elements between water changes long before they run out of the big three nutrients.\u003c\/strong\u003e Seachem Flourish Trace is a blend of boron, cobalt, copper, manganese, molybdenum, zinc and other trace elements formulated to replace what plants deplete, as part of the Flourish planted-aquarium range. It suits any freshwater planted aquarium running on a regular fertilising routine.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad trace-element blend\u003c\/strong\u003e — boron, cobalt, copper, manganese, molybdenum, zinc, rubidium, nickel and vanadium in one dose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWon't noticeably shift pH, GH or KH\u003c\/strong\u003e — Seachem states the concentrations are too low to act as a buffer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePairs with liquid Flourish\u003c\/strong\u003e — alternate days with regular Flourish rather than dosing both on the same day.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContains copper\u003c\/strong\u003e — genuinely useful for plants, but worth knowing if you keep shrimp or snails; see Safety below.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCost per litre drops sharply with size\u003c\/strong\u003e — the small bottles run about 1c per litre treated, the 2 L and 4 L bottles under 1c.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eBarcode\u003c\/th\u003e\n\u003cth\u003eApprox. litres treated per bottle\u003c\/th\u003e\n\u003cth\u003eCost per litre treated\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e50 mL\u003c\/td\u003e\n\u003ctd\u003e000116074407\u003c\/td\u003e\n\u003ctd\u003e~800 L\u003c\/td\u003e\n\u003ctd\u003e1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 mL\u003c\/td\u003e\n\u003ctd\u003e000116074506\u003c\/td\u003e\n\u003ctd\u003e~1,600 L\u003c\/td\u003e\n\u003ctd\u003e1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e250 mL\u003c\/td\u003e\n\u003ctd\u003e000116074605\u003c\/td\u003e\n\u003ctd\u003e~4,000 L\u003c\/td\u003e\n\u003ctd\u003eUnder 1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e500 mL\u003c\/td\u003e\n\u003ctd\u003e000116074308\u003c\/td\u003e\n\u003ctd\u003e~8,000 L\u003c\/td\u003e\n\u003ctd\u003eUnder 1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 L\u003c\/td\u003e\n\u003ctd\u003e000116074803\u003c\/td\u003e\n\u003ctd\u003e~32,000 L\u003c\/td\u003e\n\u003ctd\u003eUnder 1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4 L\u003c\/td\u003e\n\u003ctd\u003e000116074902\u003c\/td\u003e\n\u003ctd\u003e~64,000 L\u003c\/td\u003e\n\u003ctd\u003eUnder 1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eWhich size do I need?\u003c\/h3\u003e\u003cp\u003eThe 50 mL and 100 mL bottles work out to around 1c per litre of water treated; step up to 250 mL or larger and it drops to under 1c per litre. If you're dosing a large or heavily planted tank twice weekly, the 2 L or 4 L bottle is the better-value option — if you're trying trace dosing for the first time, start small.\u003c\/p\u003e\u003ch3\u003eDosage and directions\u003c\/h3\u003e\u003cp\u003eStandard dose: 5 mL (one capful) per 80 L, twice weekly. If you're also dosing regular Flourish, alternate the two on different days rather than dosing both at once.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSuitable for freshwater planted aquariums on a regular fertilising routine.\u003c\/li\u003e\n\u003cli\u003eNot recommended for reef or marine tanks — Seachem markets this as a freshwater planted-tank product only.\u003c\/li\u003e\n\u003cli\u003eKeep in mind if you keep shrimp or snails — see Safety.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSafety\u003c\/h3\u003e\u003cp\u003eThis product contains a small amount of copper (0.0032%), which is toxic to invertebrates at high concentrations. Seachem places shrimp and snails in its \"sensitive\" compatibility category for this product — start with a partial dose and build up gradually rather than dosing at full strength straight away. Seachem also notes it's very difficult to reach an overdosing level of copper through Flourish products alone at normal doses. As with any concentrated fertiliser, a minor overdose is typically not harmful, but a large one can stress fish, plants and beneficial bacteria.\u003c\/p\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-flourish-phosphorus\"\u003eSeachem Flourish Phosphorus\u003c\/a\u003e and \u003ca href=\"\/products\/seachem-flourish-potassium\"\u003eSeachem Flourish Potassium\u003c\/a\u003e — the macro-nutrients this product doesn't supply.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-flourish-tabs\"\u003eSeachem Flourish Tabs\u003c\/a\u003e — root-zone feeding for heavy root-feeding plants.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eCovered by your rights under Australian Consumer Law in addition to any manufacturer guarantee. Ships Australia-wide from North Lakes, QLD.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eIs it safe for shrimp?\u003c\/h4\u003e\u003cp\u003eIt contains a small amount of copper, and Seachem lists shrimp and snails as sensitive to this product — start with a partial dose and increase gradually, rather than dosing at full strength from day one.\u003c\/p\u003e\u003ch4\u003eWill it affect my pH, GH or KH?\u003c\/h4\u003e\u003cp\u003eSeachem states no noticeable effect — the trace-element concentrations are too low to act as a buffer.\u003c\/p\u003e\u003ch4\u003eCan I dose it on the same day as regular Flourish?\u003c\/h4\u003e\u003cp\u003eSeachem's guidance is to alternate — dose one on one day, the other a couple of days later, rather than both at once.\u003c\/p\u003e\u003ch4\u003eCan I use it in a reef tank?\u003c\/h4\u003e\u003cp\u003eNo — it's formulated and marketed for freshwater planted aquariums, not reef or marine systems.\u003c\/p\u003e\u003ch4\u003eWhich size treats the most water per dollar?\u003c\/h4\u003e\u003cp\u003eThe 2 L and 4 L bottles work out to under 1c per litre treated, roughly half the per-litre cost of the 50 mL bottle.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"50 mL","offer_id":55244154568995,"sku":null,"price":12.95,"currency_code":"AUD","in_stock":false},{"title":"100 mL","offer_id":55244154601763,"sku":null,"price":18.95,"currency_code":"AUD","in_stock":false},{"title":"250 mL","offer_id":55244154634531,"sku":null,"price":27.95,"currency_code":"AUD","in_stock":false},{"title":"500 mL","offer_id":55244154667299,"sku":null,"price":43.95,"currency_code":"AUD","in_stock":true},{"title":"2 L","offer_id":55244154700067,"sku":null,"price":150.95,"currency_code":"AUD","in_stock":false},{"title":"4 L","offer_id":55244154732835,"sku":null,"price":279.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/seachem-flourish-trace-43160359665955.webp?v=1790238164"},{"product_id":"seachem-flourish-phosphorus","title":"Seachem Flourish Phosphorus","description":"\u003cp\u003e\u003cstrong\u003ePhosphorus is the nutrient planted tanks run short of first, and Seachem Flourish Phosphorus lets you correct it without touching nitrate.\u003c\/strong\u003e It's a concentrated potassium phosphate solution formulated for the Flourish planted-aquarium range, dosed to a target phosphate reading rather than a single fixed schedule. It suits any freshwater planted aquarium — high-tech CO2 tanks and low-tech alike — where plants are showing stunted growth or dark, phosphorus-starved leaves.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTargeted phosphorus, no nitrate\u003c\/strong\u003e — corrects a phosphate deficiency without adding nitrate, so the two nutrients can be dosed independently.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDose to your test kit, not a guess\u003c\/strong\u003e — Seachem recommends adjusting the dose to a phosphate test result rather than dosing blind, because dosing without testing is the main cause of pest algae with this product.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision dosing formula included\u003c\/strong\u003e — for aquarists who want an exact phosphate increase rather than the standard maintenance dose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConcentrated\u003c\/strong\u003e — every size treats water for under 1c per litre, and the cost per litre drops further as pack size goes up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReported safe for shrimp\u003c\/strong\u003e — Seachem states it is safe for invertebrates such as shrimp when dosed as directed.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eBarcode\u003c\/th\u003e\n\u003cth\u003eApprox. litres treated per bottle\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 mL\u003c\/td\u003e\n\u003ctd\u003e000116019507\u003c\/td\u003e\n\u003ctd\u003e~3,200 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e250 mL\u003c\/td\u003e\n\u003ctd\u003e000116019606\u003c\/td\u003e\n\u003ctd\u003e~8,000 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e500 mL\u003c\/td\u003e\n\u003ctd\u003e000116019309\u003c\/td\u003e\n\u003ctd\u003e~16,000 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 L\u003c\/td\u003e\n\u003ctd\u003e000116019804\u003c\/td\u003e\n\u003ctd\u003e~64,000 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4 L\u003c\/td\u003e\n\u003ctd\u003e000116019903\u003c\/td\u003e\n\u003ctd\u003e~128,000 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eActive constituent: potassium phosphate solution, supplying available phosphate (P₂O₅) 0.3% and soluble potash (K₂O) 0.2%.\u003c\/p\u003e\u003ch3\u003eWhich size do I need?\u003c\/h3\u003e\u003cp\u003eAll five sizes cost well under 1c per litre of water treated, and the cost per litre falls as the bottle gets bigger — the 4 L pack works out cheapest per litre treated, the 100 mL bottle the most expensive. Buy small if you're testing whether your tank needs regular phosphorus dosing at all; buy the 2 L or 4 L if you're already dosing weekly across a large or heavily planted system.\u003c\/p\u003e\u003ch3\u003eDosage and directions\u003c\/h3\u003e\u003cp\u003eStandard maintenance dose: 2.5 mL (half a cap) per 80 L, once or twice weekly, or as needed when plants show deficiency signs such as stunted growth or dark-green colouring. Seachem's own guidance is to dose against a phosphate test kit reading rather than a fixed schedule, targeting a phosphate level of roughly 0.15–1.0 mg\/L.\u003c\/p\u003e\u003cp\u003eFor a precise increase, Seachem publishes a dosing formula: 0.8 × tank volume in US gallons × desired phosphate increase in mg\/L = mL to dose.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSuitable for freshwater planted aquariums, including high-tech CO2-injected setups and low-tech tanks.\u003c\/li\u003e\n\u003cli\u003eReported safe for freshwater invertebrates such as shrimp when dosed as directed.\u003c\/li\u003e\n\u003cli\u003eNot intended as a stand-alone fertiliser — most planted tanks also need a nitrogen, potassium and trace-element source; Seachem does not publish reef or marine dosing guidance for this product, so treat it as a freshwater planted-tank product only.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSafety\u003c\/h3\u003e\u003cp\u003eA minor overdose is typically not harmful, but a large one can shift nutrient levels quickly enough to stress fish, plants and beneficial bacteria — measure doses rather than pouring by eye, and keep dosing tied to test results rather than a guess.\u003c\/p\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-flourish-potassium\"\u003eSeachem Flourish Potassium\u003c\/a\u003e — corrects potassium deficiency, the nutrient most often short alongside phosphorus.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-flourish-trace\"\u003eSeachem Flourish Trace\u003c\/a\u003e — covers the trace elements this product doesn't supply.\u003c\/li\u003e\n\u003cli\u003eA phosphate test kit — needed to dose this product against a reading rather than a fixed schedule.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eCovered by your rights under Australian Consumer Law in addition to any manufacturer guarantee. Ships Australia-wide from North Lakes, QLD.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eWill this cause algae?\u003c\/h4\u003e\u003cp\u003eOnly if it's dosed without testing. Phosphate is a plant nutrient, but oversupplying it relative to what your plants can use is a common cause of pest algae — dose against a test kit reading rather than on a fixed schedule alone.\u003c\/p\u003e\u003ch4\u003eDoes it add nitrate?\u003c\/h4\u003e\u003cp\u003eNo. It's formulated to supply phosphorus without nitrate, so it can be dosed independently of your nitrogen fertiliser.\u003c\/p\u003e\u003ch4\u003eIs it safe for shrimp?\u003c\/h4\u003e\u003cp\u003eSeachem states it is safe for invertebrates such as shrimp when dosed as directed.\u003c\/p\u003e\u003ch4\u003eWhat size should I buy first?\u003c\/h4\u003e\u003cp\u003eStart with the 100 mL or 250 mL bottle if you haven't dosed phosphorus before — it lasts a long time at the standard dose, and lets you confirm your tank needs it before committing to a larger pack.\u003c\/p\u003e\u003ch4\u003eHow is the dose measured?\u003c\/h4\u003e\u003cp\u003eBy volume against your tank size — 2.5 mL per 80 L as a maintenance dose, or Seachem's formula (0.8 × US gallons × desired mg\/L increase) for a precise target.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"100 mL","offer_id":55244169871651,"sku":null,"price":17.95,"currency_code":"AUD","in_stock":false},{"title":"250 mL","offer_id":55244169904419,"sku":null,"price":26.95,"currency_code":"AUD","in_stock":false},{"title":"500 mL","offer_id":55244169937187,"sku":null,"price":43.95,"currency_code":"AUD","in_stock":true},{"title":"2 L","offer_id":55244169969955,"sku":null,"price":150.95,"currency_code":"AUD","in_stock":false},{"title":"4 L","offer_id":55244170002723,"sku":null,"price":279.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/seachem-flourish-phosphorus-43160364122403.webp?v=1790238166"},{"product_id":"seachem-flourish-nitrogen","title":"Seachem Flourish Nitrogen","description":"\u003cp\u003e\u003cstrong\u003eNitrogen without the ammonia spike.\u003c\/strong\u003e Seachem Flourish Nitrogen is a concentrated nitrogen source for the planted aquarium, blending nitrate and a complexed, plant-unavailable-until-metabolised form of ammonium — part of the Flourish planted-tank system alongside Flourish, Flourish Iron and Flourish Excel.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual nitrogen source\u003c\/strong\u003e — roughly half nitrate, half complexed ammonium, giving plants both forms without releasing free ammonia into the water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShrimp and invertebrate safe\u003c\/strong\u003e — no free ammonia is released at label doses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrects nitrogen deficiency\u003c\/strong\u003e — for stunted growth and pale colour in demanding, fast-growing planted tanks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePairs with the rest of the NPK line\u003c\/strong\u003e — designed to be dosed alongside Flourish Phosphorus and Flourish Potassium for full macronutrient control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFive bottle sizes\u003c\/strong\u003e — 100 mL through to 4 L.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eNitrogen supplement (nitrate and complexed ammonium)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater, planted tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSizes\u003c\/th\u003e\n\u003ctd\u003e100 mL, 250 mL, 500 mL, 2 L, 4 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBeginner dose\u003c\/th\u003e\n\u003ctd\u003e2.5 mL (half a cap) per 160 L, twice weekly or as needed against deficiency signs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNitrogen form\u003c\/th\u003e\n\u003ctd\u003eApproximately 50% nitrate, 50% complexed ammonium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eIngredients\u003c\/h3\u003e\u003cp\u003eDerived from: Potassium Nitrate, Urea.\u003c\/p\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal Nitrogen (N)\u003c\/th\u003e\n\u003ctd\u003e1.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSoluble Potash (K₂O)\u003c\/th\u003e\n\u003ctd\u003e2%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eWhich size do I need?\u003c\/h3\u003e\u003cp\u003eEvery size works out to under 1c per litre treated at the beginner dose rate — the 4 L bottle is the cheapest per litre of the five, the 100 mL bottle the most expensive, and even the smallest bottle still costs a fraction of a cent per treated litre. A 100 L tank dosed twice weekly at the beginner rate uses roughly 1.6 mL a dose, so a 250 mL bottle covers around six months before a refill.\u003c\/p\u003e\u003ch3\u003eDosage and directions\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBeginner dose: 2.5 mL per 160 L, twice a week, or as needed in response to nitrogen deficiency signs (pale new growth, stalled stem growth).\u003c\/li\u003e\n\u003cli\u003eExpert dosing formula: 0.25 × v × n = m, where v is tank volume in gallons, n is the desired nitrogen increase in mg\/L, and m is the millilitres to dose. For a nitrate-equivalent calculation, use 0.05 in place of 0.25.\u003c\/li\u003e\n\u003cli\u003eTest nitrate with a liquid or strip test kit before dosing if you're unsure of your current level — Flourish Nitrogen adds to whatever nitrate your tank is already carrying from fish waste.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSuitable for freshwater planted tanks with fast-growing or nitrogen-hungry stem plants.\u003c\/li\u003e\n\u003cli\u003eNot needed in most lightly stocked, lightly planted tanks — fish waste alone often supplies enough nitrate, and adding more without plant demand just feeds algae.\u003c\/li\u003e\n\u003cli\u003eSafe for shrimp and other invertebrates at label doses — no free ammonia is released.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-flourish\"\u003eSeachem Flourish\u003c\/a\u003e — base trace elements, low in nitrogen and phosphate by design so this product can fill the gap.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-flourish-iron\"\u003eSeachem Flourish Iron\u003c\/a\u003e — targeted iron dosing for red and deficient plants.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-flourish-excel\"\u003eSeachem Flourish Excel\u003c\/a\u003e — liquid carbon dosed on its own daily schedule.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eSeachem doesn't publish a fixed warranty term on consumable dosing products; your purchase is still covered by the consumer guarantees under Australian Consumer Law. Ships as a standard parcel — no cold chain or special handling required.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eWill Flourish Nitrogen cause an ammonia spike?\u003c\/h4\u003e\u003cp\u003eNo. Seachem states no free ammonia is released at label doses — the ammonium component is complexed and only becomes plant-available as it's metabolised.\u003c\/p\u003e\u003ch4\u003eDo I need this if I already have fish in the tank?\u003c\/h4\u003e\u003cp\u003eNot always. Fish waste already supplies nitrate, and a heavily stocked tank may need little or no extra nitrogen. Flourish Nitrogen is aimed at fast-growing, densely planted tanks where plant demand outpaces what fish waste alone provides — test before dosing if you're unsure.\u003c\/p\u003e\u003ch4\u003eIs it safe for shrimp?\u003c\/h4\u003e\u003cp\u003eYes, Seachem states it's safe for invertebrates including shrimp at label dosing.\u003c\/p\u003e\u003ch4\u003eWhat else do I need to dose alongside it?\u003c\/h4\u003e\u003cp\u003eFlourish Nitrogen covers nitrogen only. For full NPK coverage, Seachem pairs it with Flourish Phosphorus and Flourish Potassium, plus a base trace-element product like Flourish.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"100 mL","offer_id":55244173181219,"sku":null,"price":18.95,"currency_code":"AUD","in_stock":false},{"title":"250 mL","offer_id":55244173213987,"sku":null,"price":26.95,"currency_code":"AUD","in_stock":false},{"title":"500 mL","offer_id":55244173246755,"sku":null,"price":43.95,"currency_code":"AUD","in_stock":true},{"title":"2 L","offer_id":55244173279523,"sku":null,"price":150.95,"currency_code":"AUD","in_stock":false},{"title":"4 L","offer_id":55244173312291,"sku":null,"price":279.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/seachem-flourish-nitrogen-43160364351779.webp?v=1790238164"},{"product_id":"seachem-flourish-potassium","title":"Seachem Flourish Potassium","description":"\u003cp\u003e\u003cstrong\u003eYellowing or pinholed leaves on your oldest plants are usually a potassium problem, and Seachem Flourish Potassium is a targeted fix.\u003c\/strong\u003e It's a potassium sulphate solution built for the Flourish planted-aquarium range, carrying no nitrate or phosphate so it can be dosed on its own schedule alongside the rest of your fertiliser routine. It suits any freshwater planted aquarium showing the classic signs of potassium deficiency.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTargets potassium specifically\u003c\/strong\u003e — corrects chlorosis (yellowing) and necrosis (browning, tissue death) in older leaves, pinholing, and weak stems and roots.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo nitrate or phosphate\u003c\/strong\u003e — dose it without affecting either of those levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReported safe for freshwater shrimp\u003c\/strong\u003e, including Amano shrimp.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot removed by carbon filtration\u003c\/strong\u003e, so it keeps working alongside your usual filter media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConcentrated\u003c\/strong\u003e — every size treats water for under 1c per litre, cheapest per litre in the 2 L bottle.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eBarcode\u003c\/th\u003e\n\u003cth\u003eApprox. litres treated per bottle\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 mL\u003c\/td\u003e\n\u003ctd\u003e000116046503\u003c\/td\u003e\n\u003ctd\u003e~2,500 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e250 mL\u003c\/td\u003e\n\u003ctd\u003e000116046602\u003c\/td\u003e\n\u003ctd\u003e~6,250 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e500 mL\u003c\/td\u003e\n\u003ctd\u003e000116046305\u003c\/td\u003e\n\u003ctd\u003e~12,500 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 L\u003c\/td\u003e\n\u003ctd\u003e000116046800\u003c\/td\u003e\n\u003ctd\u003e~50,000 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eActive constituent: potassium sulphate solution, supplying 50,000 mg\/L potassium.\u003c\/p\u003e\u003ch3\u003eWhich size do I need?\u003c\/h3\u003e\u003cp\u003eAll sizes work out to under 1c per litre of water treated, and the cost per litre drops as the bottle gets bigger — the 2 L bottle is the cheapest per litre, the 100 mL bottle the most convenient to start with. Note that the 2 L bottle ships with a larger dosing cap than the smaller sizes, so measure your dose rather than assuming one capful equals 5 mL on that size.\u003c\/p\u003e\u003ch3\u003eDosage and directions\u003c\/h3\u003e\u003cp\u003eStandard dose: 5 mL (one capful on the smaller sizes) per 125 L, 2–3 times weekly or as needed when older leaves show yellowing, browning or pinholing. Each dose raises potassium by roughly 2 mg\/L. Seachem doesn't sell a potassium test kit, so dosing here is guided by plant response and frequency rather than a target reading — Seachem's own guidance cites a wide range of workable potassium levels, roughly 30–120 ppm, with good results reported across that range.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSuitable for freshwater planted aquariums showing potassium deficiency symptoms in older leaves.\u003c\/li\u003e\n\u003cli\u003eReported safe for freshwater shrimp, including Amano shrimp.\u003c\/li\u003e\n\u003cli\u003eSeachem does not publish reef or marine dosing guidance for this product — treat it as a freshwater planted-tank product only.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSafety\u003c\/h3\u003e\u003cp\u003eSeachem does not publish a specific overdose warning or a pH\/KH impact statement for this product. As with any concentrated fertiliser, measure doses rather than pouring by eye, and watch plant and livestock response after starting or increasing a dose.\u003c\/p\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-flourish-phosphorus\"\u003eSeachem Flourish Phosphorus\u003c\/a\u003e — corrects phosphorus deficiency, which often shows up alongside a potassium shortfall.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-flourish-trace\"\u003eSeachem Flourish Trace\u003c\/a\u003e — covers the trace elements this product doesn't supply.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eCovered by your rights under Australian Consumer Law in addition to any manufacturer guarantee. Ships Australia-wide from North Lakes, QLD.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eHow do I know if my tank needs this?\u003c\/h4\u003e\u003cp\u003eLook at the oldest leaves first — yellowing, browning at the edges, small holes (pinholing), or weak, thin stems are the classic signs of a potassium shortfall in a planted tank.\u003c\/p\u003e\u003ch4\u003eIs it safe for shrimp?\u003c\/h4\u003e\u003cp\u003eSeachem reports it as safe for freshwater shrimp, including Amano shrimp, when dosed as directed.\u003c\/p\u003e\u003ch4\u003eWill it affect my nitrate or phosphate levels?\u003c\/h4\u003e\u003cp\u003eNo — it's formulated without either, so you can dose potassium independently of your nitrogen and phosphorus routine.\u003c\/p\u003e\u003ch4\u003eDoes carbon filtration remove it?\u003c\/h4\u003e\u003cp\u003eNo, Seachem states it is not removed by carbon filtration.\u003c\/p\u003e\u003ch4\u003eWhy doesn't Seachem give a single fixed dose?\u003c\/h4\u003e\u003cp\u003eBecause there isn't a widely available hobby test kit for potassium, Seachem instead publishes a workable range and recommends adjusting frequency to how your plants respond, rather than dosing to a specific test result.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"100 mL","offer_id":55244173738275,"sku":null,"price":17.95,"currency_code":"AUD","in_stock":false},{"title":"250 mL","offer_id":55244173771043,"sku":null,"price":27.95,"currency_code":"AUD","in_stock":false},{"title":"500 mL","offer_id":55244173803811,"sku":null,"price":40.95,"currency_code":"AUD","in_stock":true},{"title":"2 L","offer_id":55244173836579,"sku":null,"price":150.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/seachem-flourish-potassium-43160365334819.webp?v=1790233226"},{"product_id":"seachem-flourish-advance","title":"Seachem Flourish Advance","description":"\u003cp\u003e\u003cstrong\u003eA phytohormone boost that gets new plants rooting and pearling faster.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSeachem Flourish Advance is a bio-stimulant for freshwater planted aquariums that supplies natural phytohormones, amino acids and trace minerals to accelerate root and shoot development, dosed daily alongside the main Flourish trace-element line.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhytohormone-driven\u003c\/strong\u003e — stimulates root and shoot growth directly, rather than only supplying the raw minerals plants convert into growth.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoosts nutrient uptake\u003c\/strong\u003e — improves how efficiently plants use the minerals already in the water column.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaily dosing\u003c\/strong\u003e — designed to be dosed little and often rather than as a weekly top-up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafe across the tank\u003c\/strong\u003e — non-toxic to fish, plants and invertebrates including shrimp at the recommended dose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBest after replanting or trimming\u003c\/strong\u003e — the growth response is most noticeable when a tank is recovering from a hardscape rework or heavy trim.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003ctd\u003e50 mL \/ 100 mL \/ 250 mL \/ 500 mL \/ 2 L \/ 4 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eForm\u003c\/th\u003e\n\u003ctd\u003eLiquid concentrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater, planted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eActive constituents\u003c\/th\u003e\n\u003ctd\u003ePhosphate 0.04% · potassium 0.45% · calcium 0.04% · magnesium 0.04% · amino acids, ascorbic acid and sugar alcohols · phytohormones 0.0003%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStandard dose\u003c\/th\u003e\n\u003ctd\u003e5 mL (1 capful) per 80 L, daily or as required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eWhich size do I need?\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePack\u003c\/th\u003e\n\u003cth\u003eWater treated per dose\u003c\/th\u003e\n\u003cth\u003eCost per litre treated\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e50 mL\u003c\/td\u003e\n\u003ctd\u003e800 L\u003c\/td\u003e\n\u003ctd\u003e2c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 mL\u003c\/td\u003e\n\u003ctd\u003e1,600 L\u003c\/td\u003e\n\u003ctd\u003e1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e250 mL\u003c\/td\u003e\n\u003ctd\u003e4,000 L\u003c\/td\u003e\n\u003ctd\u003eunder 1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e500 mL\u003c\/td\u003e\n\u003ctd\u003e8,000 L\u003c\/td\u003e\n\u003ctd\u003eunder 1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 L\u003c\/td\u003e\n\u003ctd\u003e32,000 L\u003c\/td\u003e\n\u003ctd\u003eunder 1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4 L\u003c\/td\u003e\n\u003ctd\u003e64,000 L\u003c\/td\u003e\n\u003ctd\u003eunder 1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eBecause Advance is dosed daily rather than weekly, small bottles run out fast on anything but a small tank — the 500 mL is the practical minimum for a single display tank dosed year-round, at under a cent per litre.\u003c\/p\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e freshwater planted aquariums, especially tanks recovering from a trim, replant or hardscape rebuild.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e fish-only tanks with no live plants, and not a substitute for Flourish's trace-element base — Advance stimulates growth, it doesn't supply the full mineral load.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDosage and directions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eShake well before use.\u003c\/li\u003e\n\u003cli\u003eAdd 5 mL (1 capful) per 80 L, daily or as required to maintain growth.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSafety\u003c\/h3\u003e\n\u003cp\u003eNon-toxic to fish, plants and invertebrates, including shrimp, at the recommended dose. A mild sour smell from the bottle is normal and doesn't indicate the product has spoiled.\u003c\/p\u003e\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-flourish\"\u003eSeachem Flourish\u003c\/a\u003e — the trace-element base Advance is designed to work alongside, not replace.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-flourish-excel\"\u003eSeachem Flourish Excel\u003c\/a\u003e — a liquid carbon source for tanks without pressurised CO2.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-flourish-tabs\"\u003eSeachem Flourish Tabs\u003c\/a\u003e — root tabs for heavy root feeders during the same recovery period Advance targets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eCovered by Seachem's standard manufacturer warranty in addition to your rights under Australian Consumer Law. Standard freight, no special handling required.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eCan I dose Advance and Flourish on the same day?\u003c\/h4\u003e\n\u003cp\u003eYes — Advance supplies phytohormones and a small mineral top-up, Flourish supplies the main trace-element dose. They're designed to be used together.\u003c\/p\u003e\n\u003ch4\u003eHow soon will I see a difference?\u003c\/h4\u003e\n\u003cp\u003eSeachem markets Advance as accelerating root and shoot growth, most noticeable in the weeks after a trim, replant or hardscape rework rather than on an established, unchanged tank.\u003c\/p\u003e\n\u003ch4\u003eIs it safe for shrimp?\u003c\/h4\u003e\n\u003cp\u003eYes, at the recommended dose it's non-toxic to shrimp and other invertebrates.\u003c\/p\u003e\n\u003ch4\u003eWhy does it need dosing daily instead of weekly like Flourish?\u003c\/h4\u003e\n\u003cp\u003ePhytohormones are used by plants quickly and don't persist in the water column the way trace minerals do, so Advance is formulated for little-and-often dosing rather than a weekly bulk dose.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"50 mL","offer_id":55244174262563,"sku":null,"price":16.95,"currency_code":"AUD","in_stock":false},{"title":"100 mL","offer_id":55244174295331,"sku":null,"price":24.95,"currency_code":"AUD","in_stock":false},{"title":"250 mL","offer_id":55244174328099,"sku":null,"price":34.95,"currency_code":"AUD","in_stock":false},{"title":"500 mL","offer_id":55244174360867,"sku":null,"price":49.95,"currency_code":"AUD","in_stock":false},{"title":"2 L","offer_id":55244174393635,"sku":null,"price":173.95,"currency_code":"AUD","in_stock":false},{"title":"4 L","offer_id":55244174426403,"sku":null,"price":276.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/seachem-flourish-advance-43160365531427.webp?v=1790238166"},{"product_id":"seachem-equilibrium","title":"Seachem Equilibrium","description":"\u003cp\u003e\u003cstrong\u003eRebuilds the calcium, magnesium and potassium that reverse osmosis water leaves behind.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSeachem Equilibrium is a freshwater mineral supplement that restores general hardness (GH) in RO, RO\/DI or deionised water, giving planted aquarium plants the calcium, magnesium and potassium they draw down as they grow. It contains no sodium chloride, so it won't push up salinity the way some hardness boosters do.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRebuilds GH from zero\u003c\/strong\u003e — designed for RO, RO\/DI and deionised water where minerals have been stripped out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSulfate-based, chloride-free\u003c\/strong\u003e — derived from potassium sulphate, calcium sulphate, magnesium sulphate, ferric sulphate and manganese sulphate; contains no sodium or chloride.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeeds plants, not just fish\u003c\/strong\u003e — calcium, magnesium and potassium are three of the nutrients planted tanks consume fastest.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePredictable dosing\u003c\/strong\u003e — 16 g raises 80 L by 1 meq\/L (3 dH), so the rise per dose is easy to plan.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePairs with Alkaline Buffer\u003c\/strong\u003e — Equilibrium sets GH; Alkaline Buffer sets KH, so used together they land the tank on a known hardness and alkalinity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnder 1c per litre treated\u003c\/strong\u003e — a 300 g tub raises 1,500 L of water by 3 dH, one of the cheapest ways to remineralise RO water in the range.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003ctd\u003e300 g \/ 600 g \/ 4 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eForm\u003c\/th\u003e\n\u003ctd\u003eDry powder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eContains\u003c\/th\u003e\n\u003ctd\u003ePotassium sulphate, calcium sulphate, magnesium sulphate, ferric sulphate, manganese sulphate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGuaranteed analysis\u003c\/th\u003e\n\u003ctd\u003eSoluble potash (K₂O) 23.0% · Calcium 8.06% · Magnesium 2.41% · Iron 0.11% · Manganese 0.06%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSodium \/ chloride\u003c\/th\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStandard dose\u003c\/th\u003e\n\u003ctd\u003e16 g per 80 L raises GH by 1 meq\/L (3 dH)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended target\u003c\/th\u003e\n\u003ctd\u003e3–6 dH (1–2 meq\/L) for most planted community tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eWhich size do I need?\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePack\u003c\/th\u003e\n\u003cth\u003eWater raised 3 dH\u003c\/th\u003e\n\u003cth\u003eCost per litre treated\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e300 g\u003c\/td\u003e\n\u003ctd\u003e1,500 L\u003c\/td\u003e\n\u003ctd\u003eunder 1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e600 g\u003c\/td\u003e\n\u003ctd\u003e3,000 L\u003c\/td\u003e\n\u003ctd\u003eunder 1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4 kg\u003c\/td\u003e\n\u003ctd\u003e20,000 L\u003c\/td\u003e\n\u003ctd\u003eunder 1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eAll three sizes work out to under a cent per litre treated at the standard dose — the 4 kg tub is the better buy only if the tank and water-change routine are big enough to use it before it clumps in storage.\u003c\/p\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e freshwater planted aquariums, RO\/RO-DI and deionised water setups, community tanks needing a GH lift.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e topping up evaporation — dose only at water changes, since evaporated water leaves minerals behind and re-dosing on top of that will push hardness too high. Not formulated or tested for marine or reef systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDosage and directions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAdd 16 g (1 level tablespoon) per 80 L to raise GH by 1 meq\/L (3 dH).\u003c\/li\u003e\n\u003cli\u003eDissolve in 1 L of water first — the mix will look cloudy for 15–30 minutes before it clears, which is normal.\u003c\/li\u003e\n\u003cli\u003eDose at water changes, not as a top-up for evaporation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-alkaline-buffer\"\u003eSeachem Alkaline Buffer\u003c\/a\u003e — sets KH independently of the GH that Equilibrium raises.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-ph-alkalinity-kit-75-tests\"\u003eSeachem pH \u0026amp; Alkalinity Kit\u003c\/a\u003e — checks the KH that Alkaline Buffer adjusts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eCovered by Seachem's standard manufacturer warranty against defects, in addition to your rights under Australian Consumer Law. Standard freight — no special handling required.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eWill Equilibrium raise KH as well as GH?\u003c\/h4\u003e\n\u003cp\u003eNo. Equilibrium is a general hardness (GH) product — it does not add carbonate buffering. Pair it with Seachem Alkaline Buffer to set KH independently.\u003c\/p\u003e\n\u003ch4\u003eCan I use it in a saltwater or reef tank?\u003c\/h4\u003e\n\u003cp\u003eNo. Equilibrium is formulated and marketed for freshwater planted aquariums.\u003c\/p\u003e\n\u003ch4\u003eWhy did the water go cloudy after dosing?\u003c\/h4\u003e\n\u003cp\u003eDissolve the powder in a litre of water first. A temporary cloudiness for 15–30 minutes is normal and clears on its own.\u003c\/p\u003e\n\u003ch4\u003eWhich size should I buy?\u003c\/h4\u003e\n\u003cp\u003eAll three sizes cost under a cent per litre treated at the standard dose — buy the 300 g or 600 g for a single tank, and the 4 kg only if it will be used within a reasonable time, since bulk mineral powder can absorb moisture and clump once opened.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"300 g","offer_id":55244180980003,"sku":null,"price":29.95,"currency_code":"AUD","in_stock":true},{"title":"600 g","offer_id":55244181012771,"sku":null,"price":57.95,"currency_code":"AUD","in_stock":true},{"title":"4 kg","offer_id":55244181045539,"sku":null,"price":273.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/seachem-equilibrium-43160365957411.webp?v=1790238166"},{"product_id":"aquavitro-mineralize","title":"AquaVitro Mineralize","description":"\u003cp\u003e\u003cstrong\u003eRaises general hardness for the plants that actually want it, one measured dose at a time.\u003c\/strong\u003e aquavitro mineralize is a blend of divalent salts - calcium and magnesium ions - dosed to lift general hardness (GH) in a planted freshwater aquarium, for species that grow better in harder water than tap or RO water alone provides.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRaises GH by a known amount per dose\u003c\/strong\u003e - 5 mL per 40 L lifts GH by 1 meq\/L (2.8 dGH), so you can dose to a target rather than guessing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcium and magnesium based\u003c\/strong\u003e - a blend of divalent salts, not a single mineral.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuits hard-water species without overshooting soft-water ones\u003c\/strong\u003e - dose it into new water rather than the display tank, so you control exactly how much a water change changes hardness by.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCosts low cents per litre\u003c\/strong\u003e - see Cost per litre below, and the 350 mL is the cheaper of the two sizes per litre dosed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eGH raised per 5 mL dose\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e150 mL\u003c\/td\u003e\n\u003ctd\u003e1 meq\/L (2.8 dGH) per 40 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e350 mL\u003c\/td\u003e\n\u003ctd\u003e1 meq\/L (2.8 dGH) per 40 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eActive constituents\u003c\/th\u003e\n\u003ctd\u003eBlend of divalent salts (calcium and magnesium)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater, planted aquariums\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eForm\u003c\/th\u003e\n\u003ctd\u003eLiquid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eSeachem does not publish an itemised ingredient declaration for mineralize beyond describing it as a blend of divalent salts - we've stated what's published and no more.\u003c\/p\u003e\n\n\u003ch3\u003eWill it suit my plants?\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eGH range (meq\/L)\u003c\/th\u003e\n\u003cth\u003eClassification\u003c\/th\u003e\n\u003cth\u003eTypical plants\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e0-1\u003c\/td\u003e\n\u003ctd\u003eSoft\u003c\/td\u003e\n\u003ctd\u003e\n\u003cem\u003eCryptocoryne\u003c\/em\u003e, \u003cem\u003eAponogeton\u003c\/em\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1-2\u003c\/td\u003e\n\u003ctd\u003eModerately soft\u003c\/td\u003e\n\u003ctd\u003eMost community planted-tank species\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2-3\u003c\/td\u003e\n\u003ctd\u003eSlightly hard\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3-4\u003c\/td\u003e\n\u003ctd\u003eModerately hard\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4-5\u003c\/td\u003e\n\u003ctd\u003eHard\u003c\/td\u003e\n\u003ctd\u003e\n\u003cem\u003eSagittaria subulata\u003c\/em\u003e, \u003cem\u003eRiccia fluitans\u003c\/em\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5-6\u003c\/td\u003e\n\u003ctd\u003eVery hard\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eTest your water's GH before dosing. If you don't know where you're starting from, you can't dose to a target.\u003c\/p\u003e\n\n\u003ch3\u003eDosage and directions\u003c\/h3\u003e\n\u003cp\u003eAdd 5 mL per 40 L (10 US gallons) to new water when setting up a tank or doing a water change, then dose weekly, or as needed, to maintain the target hardness. Each 5 mL dose raises GH by 1 meq\/L (2.8 dGH) in that volume.\u003c\/p\u003e\n\n\u003ch3\u003eCost per litre\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eLitres dosed over the bottle's life\u003c\/th\u003e\n\u003cth\u003eCost per litre\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e150 mL\u003c\/td\u003e\n\u003ctd\u003e1,200 L (30 doses x 40 L)\u003c\/td\u003e\n\u003ctd\u003e1.6c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e350 mL\u003c\/td\u003e\n\u003ctd\u003e2,800 L (70 doses x 40 L)\u003c\/td\u003e\n\u003ctd\u003e1.2c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eThe 350 mL is the genuinely cheaper size here - about a quarter less per litre dosed than the 150 mL, on top of needing fewer bottle changes.\u003c\/p\u003e\n\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSuitable for:\u003c\/strong\u003e freshwater planted aquariums where GH needs raising for hard-water species, and RO or very soft tap water setups that need mineral content added back in.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e soft-water and blackwater species that need GH kept low - dosing this into a \u003cem\u003eCryptocoryne\u003c\/em\u003e or Amazonian blackwater tank works against what those plants and fish want.\u003c\/p\u003e\n\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cp\u003eTest GH periodically rather than dosing on a fixed schedule indefinitely - once a tank reaches its target hardness, ongoing dosing needs are usually much lighter than the initial set-up dose.\u003c\/p\u003e\n\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/aquavitro-synthesis\"\u003eaquavitro synthesis\u003c\/a\u003e - macro and micro-nutrient fertiliser for the same planted tank.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/aquavitro-envy\"\u003eaquavitro envy\u003c\/a\u003e - vitamin, amino acid and fatty acid supplement for the same routine.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eSeachem does not publish a separate warranty term for aquavitro liquid supplements. Your rights under the Australian Consumer Law apply regardless. Standard freight.\u003c\/p\u003e\n\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eHow do I know if I need this?\u003c\/h4\u003e\n\u003cp\u003eTest your tank's GH. If it's running soft for the plants you're keeping - RO water or naturally soft tap water is the usual cause - mineralize lifts it in known, measured steps rather than by guesswork.\u003c\/p\u003e\n\u003ch4\u003eWill it affect pH?\u003c\/h4\u003e\n\u003cp\u003eSeachem markets mineralize specifically as a general hardness supplement rather than a pH or KH buffer; check your KH and pH separately if you need to manage those too.\u003c\/p\u003e\n\u003ch4\u003eCan I use it in a shrimp tank?\u003c\/h4\u003e\n\u003cp\u003eMany freshwater shrimp benefit from moderate GH, but check your species' preferred range first - some, like caridina shrimp, want harder water; others want it soft. Dose to a tested target rather than a fixed schedule.\u003c\/p\u003e\n\u003ch4\u003eWhich size is better value?\u003c\/h4\u003e\n\u003cp\u003eThe 350 mL, on both counts - it works out cheaper per litre dosed than the 150 mL, and it's fewer bottles to buy over the same period of use.\u003c\/p\u003e","brand":"AquaVitro","offers":[{"title":"150 mL","offer_id":55250155929891,"sku":null,"price":19.95,"currency_code":"AUD","in_stock":true},{"title":"350 mL","offer_id":55250155962659,"sku":null,"price":33.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/aquavitro-mineralize-43107025060131.webp?v=1790238162"},{"product_id":"aquavitro-activate","title":"AquaVitro Activate","description":"\u003cp\u003e\u003cstrong\u003eFeeds the plants without feeding the algae.\u003c\/strong\u003e AquaVitro Activate is a concentrated liquid phosphorus and potassium supplement for the freshwater planted aquarium. Phosphorus is one of the three macro nutrients - alongside nitrogen and potassium - a planted tank needs to grow well, and a shortage of it shows up as stalled growth even when light and CO2 are otherwise dialled in. Activate is dosed in small, deliberate amounts specifically so phosphate does not build up to the level that feeds algae instead of plants.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e6,000 mg\/L phosphorus, 8,800 mg\/L potassium\u003c\/strong\u003e - a concentrated liquid made from potassium salts of various phosphates, so a small dose moves the tank's phosphate reading measurably.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDosed against a stated tank volume, not guessed\u003c\/strong\u003e - 5 mL treats 680 L, raising phosphate by 0.15 mg\/L and potassium by 0.06 mg\/L per dose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePairs with synthesis nitrogen supplement\u003c\/strong\u003e - dosed in equal amounts the two land close to a 5:1 nitrogen-to-phosphorus ratio, the balance most planted tanks target.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnder 1c per litre of tank water dosed\u003c\/strong\u003e - see the cost breakdown below.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarked pipette included\u003c\/strong\u003e - the bulb base holds a 1 mL mark for dosing smaller tanks accurately.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eActive constituents\u003c\/th\u003e\n\u003ctd\u003ePhosphorus 6,000 mg\/L; Potassium 8,800 mg\/L, as potassium salts of various phosphates\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDose rate\u003c\/th\u003e\n\u003ctd\u003e5 mL per 680 L (180 US gal), twice weekly or as needed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEffect per dose\u003c\/th\u003e\n\u003ctd\u003eRaises phosphate by 0.15 mg\/L and potassium by 0.06 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater, planted aquarium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack sizes stocked\u003c\/th\u003e\n\u003ctd\u003e150 mL, 350 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMeasuring aid\u003c\/th\u003e\n\u003ctd\u003eMarked pipette, 1 mL graduation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCost per litre of tank water dosed\u003c\/h3\u003e\n\u003cp\u003eBecause Activate is dosed against a stated tank volume rather than mixed into a fixed batch, the \"yield\" of a bottle is the number of 5 mL doses it holds multiplied by the 680 L each dose covers.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eDoses per bottle\u003c\/th\u003e\n\u003cth\u003eLitres dosed over the bottle's life\u003c\/th\u003e\n\u003cth\u003eCost per litre dosed\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e150 mL\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e20,400 L\u003c\/td\u003e\n\u003ctd\u003eUnder 1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e350 mL\u003c\/td\u003e\n\u003ctd\u003e70\u003c\/td\u003e\n\u003ctd\u003e47,600 L\u003c\/td\u003e\n\u003ctd\u003eUnder 1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eBoth sizes land under a cent per litre, and the 150 mL bottle is marginally the cheaper of the two per litre dosed - the 350 mL costs proportionally more per millilitre, so buy the larger size for convenience and fewer reorders, not because it stretches further per litre.\u003c\/p\u003e\n\n\u003ch3\u003eDosage and directions\u003c\/h3\u003e\n\u003cp\u003eDose 5 mL per 680 L of tank water, twice a week or as needed based on plant growth and phosphate test readings. Use the marked pipette at the bulb base for doses under 5 mL in smaller tanks. For balanced growth, dose alongside a nitrogen supplement in roughly equal amounts, which lands close to the 5:1 nitrogen-to-phosphorus ratio most planted tanks run on.\u003c\/p\u003e\n\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSuitable for:\u003c\/strong\u003e freshwater planted aquariums running a full fertiliser programme, where phosphorus is confirmed to be the limiting nutrient by a test kit or by growth that has stalled despite adequate light, CO2 and nitrogen.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e tanks that are already testing high for phosphate, or fish-only and reef systems where added phosphate is a liability rather than a benefit - excess phosphate is a leading driver of nuisance algae and, in reef tanks, suppresses coral calcification.\u003c\/p\u003e\n\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cp\u003eTest phosphate before increasing the dose beyond the stated rate. Because the effect per dose is small and deliberate, overdosing is the more likely failure mode with a concentrated product like this - more is not simply better, and pushing phosphate up faster than plants can use it is what feeds algae instead.\u003c\/p\u003e\n\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/aquavitro-carbonate\"\u003eAquaVitro Carbonate\u003c\/a\u003e - KH buffering for the same planted tank, dosed on its own schedule.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-prime\"\u003eSeachem Prime\u003c\/a\u003e - dechlorinates tap water at every water change, independent of the fertiliser dosing above.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/api-freshwater-master-multi-test-kit-5-in-1\"\u003eAPI Freshwater Master Multi Test Kit 5 in 1\u003c\/a\u003e - to confirm phosphate is actually the limiting nutrient before dosing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eAs a consumable liquid additive, Activate is not covered by a manufacturer warranty term in the usual sense; your rights under the Australian Consumer Law apply to any product that is faulty or not as described. It is not a dangerous good or oversized item and ships as standard parcel freight.\u003c\/p\u003e\n\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eWill Activate cause an algae bloom?\u003c\/h4\u003e\n\u003cp\u003eDosed at the stated rate it is designed not to - the dose is calibrated to move phosphate by a small, deliberate amount rather than push it to excess. Algae risk comes from overdosing relative to what the plants are using, not from the product itself.\u003c\/p\u003e\n\u003ch4\u003eCan I use Activate in a reef or fish-only marine tank?\u003c\/h4\u003e\n\u003cp\u003eIt is formulated and dosed for the freshwater planted aquarium. Adding phosphate deliberately to a reef system works against coral health and is not what this product is for.\u003c\/p\u003e\n\u003ch4\u003eHow do I know if my tank needs it?\u003c\/h4\u003e\n\u003cp\u003eTest for phosphate. If it reads at or near zero and plant growth has stalled despite good light and CO2, phosphorus is a likely limiting nutrient.\u003c\/p\u003e\n\u003ch4\u003eWhat's the difference between the 150 mL and 350 mL bottle on a cost basis?\u003c\/h4\u003e\n\u003cp\u003eBoth work out to under a cent per litre of tank water dosed. The 150 mL bottle is marginally cheaper per litre; the 350 mL is worth buying for fewer reorders on a larger planted collection, not for a lower unit cost.\u003c\/p\u003e","brand":"AquaVitro","offers":[{"title":"150 mL","offer_id":55250156126499,"sku":null,"price":19.95,"currency_code":"AUD","in_stock":true},{"title":"350 mL","offer_id":55250156159267,"sku":null,"price":49.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/aquavitro-activate-43107025125667.webp?v=1790238163"},{"product_id":"aquavitro-synthesis","title":"AquaVitro Synthesis","description":"\u003cp\u003e\u003cstrong\u003eA concentrated nitrogen top-up for planted tanks running short.\u003c\/strong\u003e AquaVitro Synthesis is a concentrated liquid nitrogen source for freshwater planted aquariums, delivering 30,000 mg\/L of nitrogen across three forms — organic, nitrate and ammoniacal. Dosed at 5 mL per 680 L, up to twice weekly or as needed, it tops up nitrogen for plants that are drawing it down faster than the tank supplies it naturally. Sold here in 150 mL and 350 mL.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConcentrated nitrogen source\u003c\/strong\u003e — 30,000 mg\/L total nitrogen, supplied as roughly 50% organic (urea), 25% nitrate and 25% ammoniacal nitrogen.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmall, precise doses\u003c\/strong\u003e — 5 mL treats 680 L; the included pipette holds 1 mL when filled to the base of the bulb, for scaling doses down in smaller tanks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePairs with activate\u003c\/strong\u003e — dosed alongside AquaVitro activate at the same rate, the two combine for a 5:1 nitrogen-to-phosphorus ratio.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnder a cent per litre\u003c\/strong\u003e — both pack sizes work out to under 1c per litre of aquarium water treated; see \"Which size do I need?\" below for the numbers side by side.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreshwater, planted-tank specific\u003c\/strong\u003e — formulated for the nitrogen demands of a growing planted aquarium, not as a general-purpose water conditioner.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eFreshwater planted-tank nitrogen supplement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNitrogen concentration\u003c\/th\u003e\n\u003ctd\u003e30,000 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNitrogen forms\u003c\/th\u003e\n\u003ctd\u003e~50% organic (urea), ~25% nitrate, ~25% ammoniacal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDose\u003c\/th\u003e\n\u003ctd\u003e5 mL per 680 L, up to twice weekly or as needed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEffect per dose\u003c\/th\u003e\n\u003ctd\u003e+0.24 mg\/L total nitrogen; ~+0.25 mg\/L nitrate reading immediately after dosing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater (planted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack sizes stocked\u003c\/th\u003e\n\u003ctd\u003e150 mL, 350 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhich size do I need?\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eLitres treated per pack\u003c\/th\u003e\n\u003cth\u003eCost per litre treated\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e150 mL\u003c\/td\u003e\n\u003ctd\u003e20,400 L\u003c\/td\u003e\n\u003ctd\u003eUnder 1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e350 mL\u003c\/td\u003e\n\u003ctd\u003e47,600 L\u003c\/td\u003e\n\u003ctd\u003eUnder 1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eBoth sizes land under a cent per litre of aquarium water treated, and on a strict per-litre basis the 150 mL works out fractionally cheaper than the 350 mL. Pack size comes down to how often you want to reorder rather than a bulk-buy saving. aquavitro also makes 1 L and 4 L sizes; this store currently stocks 150 mL and 350 mL only.\u003c\/p\u003e\n\n\u003ch3\u003eDosage and directions\u003c\/h3\u003e\n\u003cp\u003eDose 5 mL per 680 L (180 US gallons) of aquarium water, up to twice a week or as needed, based on how quickly your plants are using nitrogen. Use the graduated pipette provided — filled to the base of the bulb it measures 1 mL, useful for scaling the dose down in smaller tanks. For a more complete feed, dose AquaVitro activate at the same rate for a 5:1 nitrogen-to-phosphorus ratio.\u003c\/p\u003e\n\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSuitable for freshwater planted aquariums where plants are actively using nitrogen — typically moderate-to-high light, CO2-supplemented setups draw it down fastest.\u003c\/li\u003e\n\u003cli\u003eNot suitable as a stand-alone complete fertiliser — Synthesis supplies nitrogen only, not phosphorus, potassium or micronutrients, so it needs pairing with the rest of a dosing range for a full feeding programme.\u003c\/li\u003e\n\u003cli\u003eNot formulated for reef or marine systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSafety\u003c\/h3\u003e\n\u003cp\u003eA concentrated product — dose into an area of good flow rather than directly onto plants or livestock. Adding nitrogen faster than plants can use it can fuel algae growth, so increase doses gradually and test rather than dosing to a fixed schedule regardless of readings.\u003c\/p\u003e\n\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eCovered by the standard consumer guarantees under Australian Consumer Law, in addition to any manufacturer assurance. Standard freight.\u003c\/p\u003e\n\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eDoes Synthesis contain phosphorus or potassium?\u003c\/h4\u003e\n\u003cp\u003eNo — despite the name, Synthesis is a nitrogen-only source. Dose AquaVitro activate alongside it for phosphorus, at the same rate, for a 5:1 nitrogen-to-phosphorus ratio.\u003c\/p\u003e\n\u003ch4\u003eHow much does one dose raise my nitrate reading?\u003c\/h4\u003e\n\u003cp\u003eManufacturer figures show a 5 mL dose per 680 L raises total nitrogen by about 0.24 mg\/L, showing as roughly a 0.25 mg\/L nitrate increase straight after dosing.\u003c\/p\u003e\n\u003ch4\u003eHow often should I dose?\u003c\/h4\u003e\n\u003cp\u003eUp to twice a week, or as needed based on how quickly your plants are drawing nitrogen down — test rather than dosing on a fixed schedule regardless of results.\u003c\/p\u003e\n\u003ch4\u003eIs the 350 mL better value than the 150 mL?\u003c\/h4\u003e\n\u003cp\u003eNot on a per-litre-treated basis — both work out to under a cent per litre, with the 150 mL fractionally ahead. Choose based on how often you want to reorder.\u003c\/p\u003e\n\u003ch4\u003eCan I use Synthesis in a marine or reef tank?\u003c\/h4\u003e\n\u003cp\u003eIt's formulated for freshwater planted aquariums and isn't intended for reef systems.\u003c\/p\u003e","brand":"AquaVitro","offers":[{"title":"150 mL","offer_id":55250156192035,"sku":null,"price":19.95,"currency_code":"AUD","in_stock":true},{"title":"350 mL","offer_id":55250156224803,"sku":null,"price":49.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/aquavitro-synthesis-43107025191203.webp?v=1790238163"},{"product_id":"aquavitro-envy","title":"AquaVitro Envy","description":"\u003cp\u003e\u003cstrong\u003eFeeds the plants, not the algae, with a chlorella-based blend built for planted tanks.\u003c\/strong\u003e aquavitro envy is a carbohydrate, vitamin, amino acid and polyunsaturated fatty acid supplement built around chlorella, a freshwater algae naturally rich in the B-vitamin complex, enzymes and minerals. It's dosed alongside your regular fertiliser to support colour and growth rather than replace macro and micro nutrient dosing.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChlorella base\u003c\/strong\u003e - a whole-algae source of B-vitamins, amino acids and trace minerals rather than a single isolated nutrient.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull vitamin and amino acid panel\u003c\/strong\u003e - see the guaranteed analysis below for the complete published breakdown.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplements, not replaces, your fertiliser\u003c\/strong\u003e - dosed alongside a macro\/micro programme such as aquavitro synthesis, not instead of it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCosts a fraction of a cent per litre dosed\u003c\/strong\u003e - see Cost per litre below.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eGuaranteed analysis (per 1 g, minimum)\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eAscorbic acid (vitamin C)\u003c\/th\u003e\n\u003ctd\u003e2.5 mg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThiamine (B1)\u003c\/th\u003e\n\u003ctd\u003e20 µg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRiboflavin (B2)\u003c\/th\u003e\n\u003ctd\u003e20 µg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNiacin (B3)\u003c\/th\u003e\n\u003ctd\u003e120 µg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePantothenate (B5)\u003c\/th\u003e\n\u003ctd\u003e70 µg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVitamin B12\u003c\/th\u003e\n\u003ctd\u003e120.8 µg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCholine\u003c\/th\u003e\n\u003ctd\u003e4 µg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInositol\u003c\/th\u003e\n\u003ctd\u003e10 µg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eArginine\u003c\/th\u003e\n\u003ctd\u003e300 µg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGlutamate\u003c\/th\u003e\n\u003ctd\u003e600 µg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLysine\u003c\/th\u003e\n\u003ctd\u003e300 µg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTyrosine\u003c\/th\u003e\n\u003ctd\u003e190 µg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePolyunsaturated fatty acids\u003c\/th\u003e\n\u003ctd\u003e600 µg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eSeachem also states envy contains trace copper, zinc, iron and magnesium as part of the chlorella base, at levels described as safe for planted tanks and shrimp, without publishing exact figures for those trace minerals.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eDoses per bottle\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e150 mL\u003c\/td\u003e\n\u003ctd\u003e30 doses at 5 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e350 mL\u003c\/td\u003e\n\u003ctd\u003e70 doses at 5 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater, planted aquariums\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eForm\u003c\/th\u003e\n\u003ctd\u003eLiquid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStorage\u003c\/th\u003e\n\u003ctd\u003eRoom temperature, sealed; no manufacturer expiry date while sealed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch3\u003eDosage and directions\u003c\/h3\u003e\n\u003cp\u003eUse 5 mL for every 110 L (30 US gallons) of water, three times a week, or as required to maintain plant growth. Shake before use. There's no single-dose \"job done\" point the way there is with a water conditioner - envy is dosed continuously as part of your ongoing planted-tank routine.\u003c\/p\u003e\n\n\u003ch3\u003eCost per litre\u003c\/h3\u003e\n\u003cp\u003eOver the life of one bottle, envy costs under 1c per litre of tank water dosed, on either size:\u003c\/p\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eLitres dosed over the bottle's life\u003c\/th\u003e\n\u003cth\u003eCost per litre\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e150 mL\u003c\/td\u003e\n\u003ctd\u003e3,300 L (30 doses x 110 L)\u003c\/td\u003e\n\u003ctd\u003eUnder 1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e350 mL\u003c\/td\u003e\n\u003ctd\u003e7,700 L (70 doses x 110 L)\u003c\/td\u003e\n\u003ctd\u003eUnder 1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eBoth sizes come out to a fraction of a cent per litre dosed - the 150 mL is fractionally cheaper of the two per litre, so buy the 350 mL for fewer bottle changes, not for a lower running cost.\u003c\/p\u003e\n\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSuitable for:\u003c\/strong\u003e freshwater planted aquariums running a full fertilising programme, and shrimp tanks at the trace levels envy is dosed at.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e reef and marine systems - the manufacturer does not recommend envy for reef tanks.\u003c\/p\u003e\n\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cp\u003eNo storage requirements beyond keeping the bottle sealed and at room temperature. Shake before each dose, since the chlorella base can settle.\u003c\/p\u003e\n\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/aquavitro-synthesis\"\u003eaquavitro synthesis\u003c\/a\u003e - the macro\/micro fertiliser envy is designed to sit alongside.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/aquavitro-mineralize\"\u003eaquavitro mineralize\u003c\/a\u003e - for tanks that also need general hardness raised for plant species that want it.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/aquavitro-seed\"\u003eaquavitro seed\u003c\/a\u003e - a bacterial supplement for the same planted-tank routine.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eSeachem does not publish a separate warranty term for aquavitro liquid supplements. Your rights under the Australian Consumer Law apply regardless. Standard freight.\u003c\/p\u003e\n\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eDoes envy replace my regular fertiliser?\u003c\/h4\u003e\n\u003cp\u003eNo. It's a vitamin, amino acid and fatty acid supplement built on a chlorella base, dosed alongside a macro and micro-nutrient fertiliser such as aquavitro synthesis, not instead of one.\u003c\/p\u003e\n\u003ch4\u003eHow often do I dose it?\u003c\/h4\u003e\n\u003cp\u003e5 mL per 110 L, three times a week, or as needed to maintain plant growth. Shake the bottle before each dose.\u003c\/p\u003e\n\u003ch4\u003eIs it safe for shrimp?\u003c\/h4\u003e\n\u003cp\u003eSeachem states envy is dosed at trace levels safe for planted tanks and shrimp, though it does contain trace copper as part of the chlorella base.\u003c\/p\u003e\n\u003ch4\u003eWhich size should I buy?\u003c\/h4\u003e\n\u003cp\u003eWork it out from your dosing frequency: at 5 mL three times a week, a 150 mL bottle lasts about ten weeks and a 350 mL bottle about twenty-three. Per litre dosed the two sizes cost about the same fraction of a cent, so buy the 350 mL mainly to cut down how often you're re-ordering, not for a lower running cost.\u003c\/p\u003e","brand":"AquaVitro","offers":[{"title":"150 mL","offer_id":55250156323107,"sku":null,"price":19.95,"currency_code":"AUD","in_stock":true},{"title":"350 mL","offer_id":55250156355875,"sku":null,"price":49.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/aquavitro-envy-43107025223971.webp?v=1790238164"}],"url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/collections\/builder-plant-care.oembed","provider":"Nicks AOT","version":"1.0","type":"link"}