{"product_id":"red-sea-coral-pro-sea-salts-7-kg-210-ltr-bucket","title":"Red Sea Coral Pro Sea Salts - 7 kg (210 Ltr) Bucket","description":"\u003cp\u003e\u003cstrong\u003eThe growth-formula reef salt, in a size a mid-sized reef gets through.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRed Sea Coral Pro Salt is the high-alkalinity member of the Red Sea salt range, mixed to 11.5-12.5 dKH with calcium and magnesium raised in step. This 7 kg bucket makes 210 litres of seawater at 35 ppt.\u003c\/p\u003e\n\u003cp\u003eIt suits reefs in an active growth phase, frag systems and newly stocked tanks, where corals pull foundation elements down faster than a standard salt puts them back. On a mature SPS system already held at natural seawater alkalinity, it can be more carbonate than you want.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e11.5-12.5 dKH straight out of the bucket\u003c\/strong\u003e - enough carbonate headroom that a growing reef does not sag between water changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcium 450-480 mg\/L, magnesium 1350-1430 mg\/L\u003c\/strong\u003e - raised in step with the alkalinity, so the three foundation elements stay balanced instead of one running ahead.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePotassium 385-415 mg\/L\u003c\/strong\u003e - brackets Red Sea's 400 ppm reef target, so water changes alone hold the level.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMakes 210 litres\u003c\/strong\u003e - the practical size for systems under about 300 litres, where a 22 kg bucket would sit open for months.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResealable bucket\u003c\/strong\u003e - salt is hygroscopic (it draws moisture from the air), and a sealed lid is what keeps the last scoop mixing like the first.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDissolves clear in about 20 minutes\u003c\/strong\u003e - Red Sea's reformulated blend, so a water change is not an overnight job.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e$0.32 per litre mixed\u003c\/strong\u003e - the highest cost per litre in the Coral Pro range; the premium buys a size that will not sit half-used for months on a smaller system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich pack size do I need?\u003c\/h3\u003e\n\u003cp\u003eAll three packs are the same formula. Choose on how fast you get through it, because opened salt takes up moisture and clumps.\u003c\/p\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePack\u003c\/th\u003e\n\u003cth\u003eMakes\u003c\/th\u003e\n\u003cth\u003eCost per litre\u003c\/th\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e7 kg bucket\u003c\/th\u003e\n\u003ctd\u003e210 litres\u003c\/td\u003e\n\u003ctd\u003e$0.32 per litre\u003c\/td\u003e\n\u003ctd\u003eSystems under about 300 L, or a first bucket to trial the formula\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e20 kg refill box\u003c\/th\u003e\n\u003ctd\u003e600 litres\u003c\/td\u003e\n\u003ctd\u003e$0.31 per litre\u003c\/td\u003e\n\u003ctd\u003eDecanting into a bucket you already own; less plastic per litre mixed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e22 kg bucket\u003c\/th\u003e\n\u003ctd\u003e660 litres\u003c\/td\u003e\n\u003ctd\u003e$0.27 per litre\u003c\/td\u003e\n\u003ctd\u003eLarger reefs that want a resealable, moisture-proof container\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eAs a rule, buy the pack you will finish within about three months of opening it.\u003c\/p\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\u003e7 kg bucket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMakes\u003c\/th\u003e\n\u003ctd\u003e210 litres at 35 ppt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMix ratio\u003c\/th\u003e\n\u003ctd\u003e1 kg per 30 litres of RO water (Red Sea pack rating)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eSynthetic high-alkalinity reef salt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAlkalinity at 35 ppt\u003c\/th\u003e\n\u003ctd\u003e11.5-12.5 dKH (4.15-4.45 meq\/L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCalcium at 35 ppt\u003c\/th\u003e\n\u003ctd\u003e450-480 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMagnesium at 35 ppt\u003c\/th\u003e\n\u003ctd\u003e1350-1430 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePotassium at 35 ppt\u003c\/th\u003e\n\u003ctd\u003e385-415 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eSaltwater and reef\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDissolving time\u003c\/th\u003e\n\u003ctd\u003eAbout 20 minutes with circulation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch3\u003eHow to mix it\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eStart with RO or RO\/DI water brought to tank temperature, around 25 degrees C.\u003c\/li\u003e\n\u003cli\u003eAdd salt to water, never water to salt, with a powerhead already running.\u003c\/li\u003e\n\u003cli\u003eAdd roughly 1 kg per 30 litres, then check and adjust.\u003c\/li\u003e\n\u003cli\u003eCirculate and aerate until the water is completely clear - normally about 20 minutes.\u003c\/li\u003e\n\u003cli\u003eMatch temperature and salinity to the display before the water goes in.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eMix to your refractometer, not to the box.\u003c\/strong\u003e The 1 kg per 30 litre figure is Red Sea's pack rating; the exact dose that lands on 35 ppt varies with your source water and your measuring method.\u003c\/p\u003e\n\u003cp\u003eUse mixed saltwater within about 24 hours. Left standing, alkalinity drifts down and carbonate can precipitate out on the bottom of the drum.\u003c\/p\u003e\n\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003ch4\u003eSuitable for\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eMixed reefs, LPS and soft coral systems in an active growth phase\u003c\/li\u003e\n\u003cli\u003eFrag tanks and coral grow-out systems\u003c\/li\u003e\n\u003cli\u003eNew reef tanks still building coral mass\u003c\/li\u003e\n\u003cli\u003eReefers who want water changes alone to hold foundation levels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eNot suitable for\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFreshwater aquariums of any kind - this is a full synthetic seawater mix, not a tonic salt\u003c\/li\u003e\n\u003cli\u003eMature SPS systems already running at 7-8 dKH; a jump to 12 dKH at a water change can burn tips. \u003ca href=\"\/products\/red-sea-salt-20kg-refill-box-600ltr\"\u003eRed Sea Salt\u003c\/a\u003e at 7.7-8.2 dKH is the match there\u003c\/li\u003e\n\u003cli\u003eTopping up evaporation - always top up with fresh RO water, never with saltwater\u003c\/li\u003e\n\u003cli\u003eMarine fish-only systems, where the elevated foundation levels are simply not consumed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCare and storage\u003c\/h3\u003e\n\u003cp\u003eKeep the lid sealed and the bucket up off a concrete garage floor. Salt draws moisture and sets hard, and while a clumped bucket still works, the amount of salt per scoop changes - weigh it rather than scoop it if it has gone solid.\u003c\/p\u003e\n\u003cp\u003eA 7 kg bucket opened and used within about three months will still mix clear at the bottom.\u003c\/p\u003e\n\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/red-sea-seawater-refractometer\"\u003eRed Sea Seawater Refractometer\u003c\/a\u003e - sets your actual salinity, since the pack rating is only a starting point.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/red-sea-salt-measuring-cup\"\u003eRed Sea Salt Measuring Cup\u003c\/a\u003e - keeps scoops consistent between mixes.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/red-sea-reef-foundation-pro-multi-testing-kit\"\u003eRed Sea Reef Foundation Pro Multi Test Kit\u003c\/a\u003e - confirms the calcium, alkalinity and magnesium you actually landed on.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/red-sea-coral-pro-sea-salts-22-kg-660-ltr-bucket\"\u003eCoral Pro Salt 22 kg bucket\u003c\/a\u003e - the step up when 210 litres stops lasting the month.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/red-sea-coral-colors-pro-test-kit\"\u003eRed Sea Coral Colours Pro Test Kit\u003c\/a\u003e - for the iodine, potassium and iron that water changes alone will not hold.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eAs a consumable, salt carries no service warranty, but it is covered by the consumer guarantees under Australian Consumer Law. If a bucket arrives damaged, contaminated or will not dissolve, we replace it.\u003c\/p\u003e\n\u003cp\u003eAt 7 kg this ships as a standard parcel. Check the seal on arrival - a split bucket that has taken moisture in transit is worth reporting before you mix it.\u003c\/p\u003e\n\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eHow much water does a 7 kg bucket of Coral Pro Salt make?\u003c\/h4\u003e\n\u003cp\u003eA 7 kg bucket of Red Sea Coral Pro Salt makes 210 litres of seawater at 35 ppt, which is Red Sea's pack rating of 1 kg per 30 litres. The exact dose needed to hit 35 ppt varies slightly with source water, so set the final salinity with a refractometer rather than by weight alone.\u003c\/p\u003e\n\u003ch4\u003eWhat is the difference between Coral Pro Salt and standard Red Sea Salt?\u003c\/h4\u003e\n\u003cp\u003eCoral Pro Salt mixes to 11.5-12.5 dKH with calcium at 450-480 mg\/L, while standard Red Sea Salt mixes to 7.7-8.2 dKH with calcium at 415-445 mg\/L. Coral Pro is aimed at reefs actively building skeleton; standard Red Sea Salt suits mature systems already held at natural seawater alkalinity.\u003c\/p\u003e\n\u003ch4\u003eCan I use Coral Pro Salt in a fish-only marine tank?\u003c\/h4\u003e\n\u003cp\u003eIt is safe in a fish-only marine tank, but the elevated calcium, magnesium and carbonate exist to build coral skeleton and go unused without corals. Standard Red Sea Salt is the more sensible choice for fish-only and FOWLR systems.\u003c\/p\u003e\n\u003ch4\u003eWhy did my alkalinity read lower than 12 dKH after mixing?\u003c\/h4\u003e\n\u003cp\u003eFreshly mixed saltwater loses alkalinity as carbonate precipitates out if it is left standing or aerated hard for more than a day. Mix, aerate until clear, and use the water within about 24 hours rather than storing it for a week.\u003c\/p\u003e\n\u003ch4\u003eDoes the water need aerating before use?\u003c\/h4\u003e\n\u003cp\u003eYes. Circulate and aerate until the water is completely clear, normally about 20 minutes with this formula, because part-dissolved saltwater puts undissolved carbonate straight into the display tank.\u003c\/p\u003e","brand":"RedSea","offers":[{"title":"Default Title","offer_id":55242298294563,"sku":"BA0303","price":68.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/red-sea-coral-pro-sea-salts-43876739088675.webp?v=1790239782","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/red-sea-coral-pro-sea-salts-7-kg-210-ltr-bucket","provider":"Nicks AOT","version":"1.0","type":"link"}