{"product_id":"seachem-marine-buffer","title":"Seachem Marine Buffer","description":"\u003cp\u003e\u003cstrong\u003eLocks marine pH at a rock-steady 8.3 and won't push it any higher, even on an accidental overdose.\u003c\/strong\u003e Seachem Marine Buffer is a blend of sodium, magnesium, calcium, strontium and potassium carbonate, bicarbonate, chloride, sulphate and borate salts that raises and holds saltwater pH at the natural reef level of 8.3, adding roughly 1 meq\/L of alkalinity per standard dose. It's used both to bring a fresh saltwater mix up to pH, and for ongoing maintenance dosing afterwards.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTargets pH 8.3 and self-limits\u003c\/strong\u003e — Seachem states it will not push pH above 8.3 even on an accidental overdose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdds roughly 1 meq\/L of alkalinity\u003c\/strong\u003e alongside the pH lift, with every standard dose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTreats saltwater for under 1c per litre\u003c\/strong\u003e on both pack sizes — see Cost per litre below.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDissolves fast\u003c\/strong\u003e when pre-mixed in freshwater before adding to the tank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne dose rate for new mixes and maintenance\u003c\/strong\u003e — only the frequency changes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003cth\u003eBarcode\u003c\/th\u003e\n\u003cth\u003eLitres treated per pack\u003c\/th\u003e\n\u003cth\u003eCost per litre\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e250 g\u003c\/td\u003e\n\u003ctd\u003eAA0849\u003c\/td\u003e\n\u003ctd\u003e000116034609\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 g\u003c\/td\u003e\n\u003ctd\u003eAA0848\u003c\/td\u003e\n\u003ctd\u003e000116034302\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\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eLitres treated calculated at Seachem's published maintenance dose of 5 g per 80 L.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eDosage and directions\u003c\/h3\u003e\n\u003cp\u003eDissolve 5 g (one level teaspoon) in at least a cup of freshwater, then add per 80 L of tank water. For a new mix, dose daily until pH stabilises at 8.3 — usually within a week. After that, dose the same amount every two to four weeks to hold the level. Don't dose Marine Buffer directly alongside calcium, magnesium or strontium supplements — add them on alternate days, or at least 30 minutes apart.\u003c\/p\u003e\n\u003ch3\u003eSafety\u003c\/h3\u003e\n\u003cp\u003eSeachem markets this as safe for reef aquariums. If a persistent cloudiness or precipitate lasts more than about 15 minutes after dosing, that's a sign the water's ionic balance is off — do a water change before dosing again rather than adding more.\u003c\/p\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003eSuitable for FOWLR and reef marine tanks that need pH raised or held at 8.3. Not the right product for a tank under heavy biological acid load — Seachem's own guidance is that Reef Buffer is the better choice there. Not for freshwater use.\u003c\/p\u003e\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/search?q=Seachem+Reef+Buffer\"\u003eSeachem Reef Buffer\u003c\/a\u003e — the stronger option for reef tanks with a heavy bioload.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/search?q=Seachem+Reef+Advantage+Calcium\"\u003eSeachem Reef Advantage Calcium\u003c\/a\u003e — dose on alternate days from this buffer, not at the same time.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/search?q=marine+pH+test+kit\"\u003eA marine pH test kit\u003c\/a\u003e — confirm where your tank sits before dosing on a schedule.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eCovered by Seachem's standard product guarantee in addition to your rights under Australian Consumer Law. Ships as a standard parcel.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eCan I overdose this by accident?\u003c\/h4\u003e\n\u003cp\u003eSeachem states Marine Buffer will not raise pH above 8.3, even if you add more than the recommended dose. It's designed to self-limit at that level.\u003c\/p\u003e\n\u003ch4\u003eIs it safe for a reef tank?\u003c\/h4\u003e\n\u003cp\u003eSeachem markets it as reef safe. For tanks with a heavy biological acid load, Seachem's own advice is that Reef Buffer holds up better — Marine Buffer is the standard choice for most FOWLR and reef setups.\u003c\/p\u003e\n\u003ch4\u003eCan I dose it with my calcium supplement at the same time?\u003c\/h4\u003e\n\u003cp\u003eNo — don't mix it directly with calcium, magnesium or strontium additives. Dose them on alternate days, or space doses at least 30 minutes apart.\u003c\/p\u003e\n\u003ch4\u003eDo I use the same dose for a new tank as for maintenance?\u003c\/h4\u003e\n\u003cp\u003eYes, the dose rate doesn't change — 5 g per 80 L either way. What changes is frequency: daily while a new mix comes up to pH, then every two to four weeks once it's holding steady.\u003c\/p\u003e\n\u003ch4\u003eWhat if the water goes cloudy after dosing?\u003c\/h4\u003e\n\u003cp\u003eA little cloudiness that clears within about 15 minutes is normal. If it lingers longer than that, it's a sign of an ionic imbalance — do a water change before dosing again.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"250g","offer_id":55242264379683,"sku":"AA0849","price":25.0,"currency_code":"AUD","in_stock":false},{"title":"500g","offer_id":55335266386211,"sku":"AA0848","price":28.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/seachem-marine-buffer-43160355897635.webp?v=1790237814","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/seachem-marine-buffer","provider":"Nicks AOT","version":"1.0","type":"link"}