{"product_id":"api-aquarium-salt","title":"API Aquarium Salt","description":"\u003cp\u003e\u003cstrong\u003eFreshwater tonic salt with one declared ingredient, and it never evaporates away.\u003c\/strong\u003e API Aquarium Salt is sodium chloride for freshwater aquariums, sold here in 482 g, 1021 g, 1910 g and 22.7 kg packs. API's registered label declares it as 100% sodium chloride and directs it for use when setting up a freshwater aquarium or fish bowl, when changing water, and when treating fish disease. It is not a marine salt mix and will not make saltwater for a marine or reef tank.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne declared ingredient\u003c\/strong\u003e — the label lists sodium chloride at 100%, with no dyes, anti-caking agents or additives declared.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDosed by volume, not weight\u003c\/strong\u003e — 1 rounded tablespoon per 20 L, so you never need scales.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour pack sizes\u003c\/strong\u003e — from a 482 g tub for a single betta tank to a 22.7 kg bag for a fish room.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUsed at three points\u003c\/strong\u003e — new tank setup, water changes, and while treating disease.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoes not evaporate or filter out\u003c\/strong\u003e — so water you top up for evaporation never needs more salt added with it.\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 1 rounded tablespoon for every 5 US gallons (20 L), or half a rounded teaspoon for every US gallon (4 L). Applied across common tank sizes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eAquarium volume\u003c\/th\u003e\n\u003cth\u003eDose at API's label rate\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4 L\u003c\/td\u003e\n\u003ctd\u003eHalf a rounded teaspoon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e20 L\u003c\/td\u003e\n\u003ctd\u003e1 rounded tablespoon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e40 L\u003c\/td\u003e\n\u003ctd\u003e2 rounded tablespoons\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e60 L\u003c\/td\u003e\n\u003ctd\u003e3 rounded tablespoons\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 L\u003c\/td\u003e\n\u003ctd\u003e5 rounded tablespoons\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e200 L\u003c\/td\u003e\n\u003ctd\u003e10 rounded tablespoons\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e400 L\u003c\/td\u003e\n\u003ctd\u003e20 rounded tablespoons\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDose for the water you are replacing, not the whole tank, at every water change after the first. Dissolve the salt in a jug of tank water before pouring it in, so grains do not settle on the substrate or on fish.\u003c\/p\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 tonic salt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eActive ingredient\u003c\/th\u003e\n\u003ctd\u003eSodium chloride, 100%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOther ingredients\u003c\/th\u003e\n\u003ctd\u003eNone declared\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack sizes sold here\u003c\/th\u003e\n\u003ctd\u003e482 g, 1021 g, 1910 g, 22.7 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDose rate\u003c\/th\u003e\n\u003ctd\u003e1 rounded tablespoon per 20 L, or half a rounded teaspoon per 4 L\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\u003eMakes saltwater?\u003c\/th\u003e\n\u003ctd\u003eNo — this is a tonic salt, not a synthetic sea salt mix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWhen to re-dose\u003c\/th\u003e\n\u003ctd\u003eOnly in proportion to water removed at a water change\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLabel indication\u003c\/th\u003e\n\u003ctd\u003eSetting up a freshwater aquarium or fish bowl, changing water, and treating fish disease\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFreight\u003c\/th\u003e\n\u003ctd\u003eStandard, except the 22.7 kg bag which ships as oversize\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhich pack size do I need?\u003c\/h3\u003e\n\u003cp\u003eAPI does not publish a grams-per-tablespoon figure, so we cannot honestly tell you how many doses a pack contains. Choose by how much water you turn over rather than by weight.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePack\u003c\/th\u003e\n\u003cth\u003eSuits\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e482 g\u003c\/td\u003e\n\u003ctd\u003eA single betta tank, bowl or small quarantine tank, used occasionally\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1021 g\u003c\/td\u003e\n\u003ctd\u003eOne or two community tanks on a regular water change schedule\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1910 g\u003c\/td\u003e\n\u003ctd\u003eA large community tank, or several tanks dosed routinely\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e22.7 kg\u003c\/td\u003e\n\u003ctd\u003eFish rooms, breeders and retailers. Ships as oversize freight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\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 community, goldfish, betta and livebearer tanks\u003c\/li\u003e\n\u003cli\u003eQuarantine and hospital tanks\u003c\/li\u003e\n\u003cli\u003eNew freshwater setups and routine water changes\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\u003eMaking up saltwater for a marine or reef aquarium — it contains none of the calcium, magnesium, carbonates or trace elements a synthetic sea salt mix provides\u003c\/li\u003e\n\u003cli\u003eReplacing evaporated water. Salt does not evaporate, so topping up with fresh water alone is correct\u003c\/li\u003e\n\u003cli\u003eHeavily planted tanks without care — API's label advises that some plants are sensitive to salt\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIngredients\u003c\/h3\u003e\n\u003cp\u003eTranscribed from API's registered label, checked 7 August 2026.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eActive ingredient\u003c\/th\u003e\n\u003cth\u003eConcentration\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSodium chloride\u003c\/td\u003e\n\u003ctd\u003e100 g per 100 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eNo inactive ingredients, colours or anti-caking agents are declared on the label.\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\u003eStore sealed and dry. Salt draws moisture and will cake in a humid Queensland summer if left open.\u003c\/li\u003e\n\u003cli\u003eAdd salt to a jug of tank water and dissolve it fully before it goes in the aquarium.\u003c\/li\u003e\n\u003cli\u003eIncrease salt gradually rather than in one large dose when treating an established tank.\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\/api-freshwater-master-multi-test-kit-5-in-1\"\u003eAPI Freshwater Master Multi Test Kit 5 in 1\u003c\/a\u003e — so you know whether the problem you are salting for is actually an ammonia or nitrite spike.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/api-stress-coat\"\u003eAPI Stress Coat\u003c\/a\u003e — dechlorinates the replacement water salt goes into.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/api-melafix\"\u003eAPI Melafix\u003c\/a\u003e — API's tea-tree remedy, for when salt alone is not addressing damaged fins.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/api-quick-start\"\u003eAPI Quick Start\u003c\/a\u003e — live nitrifying bacteria for a new or disturbed tank.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/marina-floating-glass-thermometer\"\u003eMarina Floating Glass Thermometer\u003c\/a\u003e — salt is often used alongside a temperature change, so read it rather than guess it.\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\u003eThe 482 g, 1021 g and 1910 g packs ship as standard freight. The 22.7 kg bag ships as oversize and may attract a freight surcharge or be offered for pickup.\u003c\/p\u003e\n\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eWill API Aquarium Salt make saltwater for a marine tank?\u003c\/h4\u003e\n\u003cp\u003eNo. API Aquarium Salt is declared as 100% sodium chloride. A marine aquarium needs a synthetic sea salt mix that also supplies calcium, magnesium, carbonates and trace elements, and sodium chloride alone will not keep marine fish, corals or invertebrates alive.\u003c\/p\u003e\n\u003ch4\u003eDo I add more salt when water evaporates?\u003c\/h4\u003e\n\u003cp\u003eNo. API's label states that aquarium salt does not evaporate and is not filtered out of the water. Top up evaporation with fresh dechlorinated water only, and add salt again only in proportion to the water you physically remove at a water change.\u003c\/p\u003e\n\u003ch4\u003eHow much API Aquarium Salt does a 100 litre aquarium need?\u003c\/h4\u003e\n\u003cp\u003eAt API's label rate of 1 rounded tablespoon per 20 L, a 100 litre aquarium takes 5 rounded tablespoons for a full initial dose. If you then change 25 litres of water, you replace the salt for those 25 litres only, which is roughly 1 and a quarter rounded tablespoons.\u003c\/p\u003e\n\u003ch4\u003eIs API Aquarium Salt safe with live plants?\u003c\/h4\u003e\n\u003cp\u003eAPI's label advises that care should be taken with live plants, as some plants may be sensitive to salt. In a planted display tank the safer approach is to treat affected fish in a separate hospital tank rather than salting the display.\u003c\/p\u003e\n\u003ch4\u003eHow do I dissolve it so it does not sit on the gravel?\u003c\/h4\u003e\n\u003cp\u003eMeasure the dose into a jug of aquarium water, stir until no grains remain, then pour the solution into an area of good flow. Undissolved grains resting on the substrate or against a fish are the most common cause of irritation with any aquarium salt.\u003c\/p\u003e","brand":"API","offers":[{"title":"482 g","offer_id":55244124225827,"sku":null,"price":16.95,"currency_code":"AUD","in_stock":true},{"title":"1021 g","offer_id":55244124258595,"sku":"BA2043","price":26.95,"currency_code":"AUD","in_stock":true},{"title":"1910 g","offer_id":55244124291363,"sku":"BA2012","price":39.95,"currency_code":"AUD","in_stock":true},{"title":"22.7 kg bag","offer_id":55244124324131,"sku":null,"price":274.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/APH34_2.jpg?v=1772082105","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/api-aquarium-salt","provider":"Nicks Aquarium Oceanarium Terrarium","version":"1.0","type":"link"}