{"product_id":"brightwell-calcion-500ml","title":"Brightwell Aquatics Calcion 500 mL – Ionic Calcium Supplement","description":"\u003cp\u003eBrightwell Aquatics Calcion 500 mL is a highly concentrated ionic calcium supplement formulated for marine and reef aquariums. It supplies calcium chloride in purified water to help establish and maintain the calcium concentration required by stony corals, clams, tube worms, coralline algae, and other calcifying marine organisms.\u003c\/p\u003e\n\u003cp\u003eCalcium is used in the formation of aragonite, the mineral structure produced by many reef-building organisms. As corals and other calcifying livestock grow, calcium is continually removed from the water and may require regular replacement between water changes.\u003c\/p\u003e\n\u003cp\u003eCalcion contains no phosphate, silicate, EDTA, gluconate, polygluconate, or other unwanted organic complexing agents. Its concentrated liquid formula may be used for routine calcium maintenance or for gradual correction of a tested calcium deficiency.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHighly Concentrated Ionic Calcium:\u003c\/strong\u003e Contains a minimum of 150,000 ppm calcium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupports Calcifying Organisms:\u003c\/strong\u003e Supplies calcium required for aragonite formation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdeal for Reef Aquariums:\u003c\/strong\u003e Suitable for SPS, LPS, clams, coralline algae, tube worms, and other reef-building organisms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Organic Complexing Agents:\u003c\/strong\u003e Contains no EDTA, gluconate, or polygluconate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree of Phosphate \u0026amp; Silicate:\u003c\/strong\u003e Adds calcium without intentionally adding these unwanted substances\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Dosing:\u003c\/strong\u003e Suitable for routine maintenance, deficiency correction, or automated dosing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest-Based Formula:\u003c\/strong\u003e Allows dosing according to measured calcium concentration and daily consumption\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e500 mL Bottle:\u003c\/strong\u003e Treats up to approximately 5,000 cumulative gallons at the basic dose\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Brightwell Aquatics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Calcion\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 500 mL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquivalent Size:\u003c\/strong\u003e Approximately 16.9 fl oz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Concentrated ionic calcium supplement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAquarium Type:\u003c\/strong\u003e Marine and reef aquariums\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Calcium Range:\u003c\/strong\u003e 412–450 ppm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBasic Dose:\u003c\/strong\u003e 5 mL per 50 US gallons every other day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Correction Dose:\u003c\/strong\u003e 10 mL per 20 US gallons daily\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConcentration:\u003c\/strong\u003e 1 mL raises calcium by approximately 40 ppm in 1 US gallon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGuaranteed Analysis:\u003c\/strong\u003e Calcium minimum 150,000 ppm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIngredients:\u003c\/strong\u003e Purified water and calcium chloride\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBest Used For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSPS and LPS coral aquariums\u003c\/li\u003e\n\u003cli\u003eMixed reef systems\u003c\/li\u003e\n\u003cli\u003eMarine aquariums containing clams\u003c\/li\u003e\n\u003cli\u003eSystems with growing coralline algae\u003c\/li\u003e\n\u003cli\u003eCorrecting a tested calcium deficiency\u003c\/li\u003e\n\u003cli\u003eReplacing calcium consumed between water changes\u003c\/li\u003e\n\u003cli\u003eHigh-demand reef aquariums\u003c\/li\u003e\n\u003cli\u003eManual or automated calcium dosing programs\u003c\/li\u003e\n\u003cli\u003eUse alongside separately tested alkalinity and magnesium supplements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Calcium Matters in Reef Aquariums\u003c\/h3\u003e\n\u003cp\u003eCalcium is one of the major ions found in seawater and is required for the formation of aragonite. Corals, clams, tube worms, calcareous algae, and other reef-building organisms combine calcium with carbonate to form hard skeletal or shell material.\u003c\/p\u003e\n\u003cp\u003eCalcium demand varies according to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe number and size of calcifying organisms\u003c\/li\u003e\n\u003cli\u003eCoral growth rate\u003c\/li\u003e\n\u003cli\u003eLighting intensity\u003c\/li\u003e\n\u003cli\u003eAlkalinity and magnesium stability\u003c\/li\u003e\n\u003cli\u003eWater-change frequency\u003c\/li\u003e\n\u003cli\u003eThe calcium concentration of the salt mix\u003c\/li\u003e\n\u003cli\u003eOverall aquarium chemistry\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCalcium should be tested regularly rather than supplemented automatically.\u003c\/p\u003e\n\u003ch3\u003eBasic Directions\u003c\/h3\u003e\n\u003cp\u003eShake the bottle well before each use.\u003c\/p\u003e\n\u003cp\u003eAdd:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e5 mL per 50 US gallons every other day, or as needed to maintain calcium between 412 and 450 ppm.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAdd the measured dose to an area with strong water movement. Test calcium regularly and adjust the amount or frequency according to the aquarium’s actual calcium consumption.\u003c\/p\u003e\n\u003ch3\u003eBasic Dosage Guide\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e10 Gallons:\u003c\/strong\u003e Approximately 1 mL every other day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 Gallons:\u003c\/strong\u003e Approximately 2 mL every other day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25 Gallons:\u003c\/strong\u003e Approximately 2.5 mL every other day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e40 Gallons:\u003c\/strong\u003e Approximately 4 mL every other day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 Gallons:\u003c\/strong\u003e 5 mL every other day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e55 Gallons:\u003c\/strong\u003e Approximately 5.5 mL every other day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e75 Gallons:\u003c\/strong\u003e Approximately 7.5 mL every other day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100 Gallons:\u003c\/strong\u003e 10 mL every other day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e125 Gallons:\u003c\/strong\u003e Approximately 12.5 mL every other day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e150 Gallons:\u003c\/strong\u003e 15 mL every other day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e200 Gallons:\u003c\/strong\u003e 20 mL every other day\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese are starting maintenance amounts. Do not add calcium when testing shows the aquarium is already within or above the desired range.\u003c\/p\u003e\n\u003ch3\u003eCorrecting Low Calcium\u003c\/h3\u003e\n\u003cp\u003eTest the aquarium with an accurate marine calcium test before beginning corrective dosing.\u003c\/p\u003e\n\u003cp\u003eIf calcium is below 412 ppm, Brightwell allows Calcion to be added at a maximum rate of:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e10 mL per 20 US gallons daily.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eContinue testing during the correction period. Stop corrective dosing when calcium reaches the desired range, then determine an appropriate maintenance dose based on the aquarium’s daily consumption.\u003c\/p\u003e\n\u003cp\u003eTry to maintain calcium within approximately ±10 ppm rather than allowing large repeated swings.\u003c\/p\u003e\n\u003ch3\u003eMaximum Daily Correction Guide\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e10 Gallons:\u003c\/strong\u003e Up to 5 mL daily\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 Gallons:\u003c\/strong\u003e Up to 10 mL daily\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e40 Gallons:\u003c\/strong\u003e Up to 20 mL daily\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 Gallons:\u003c\/strong\u003e Up to 25 mL daily\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e55 Gallons:\u003c\/strong\u003e Up to approximately 27.5 mL daily\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e75 Gallons:\u003c\/strong\u003e Up to approximately 37.5 mL daily\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100 Gallons:\u003c\/strong\u003e Up to 50 mL daily\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e125 Gallons:\u003c\/strong\u003e Up to approximately 62.5 mL daily\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e150 Gallons:\u003c\/strong\u003e Up to 75 mL daily\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e200 Gallons:\u003c\/strong\u003e Up to 100 mL daily\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese are maximum correction amounts, not routine maintenance doses.\u003c\/p\u003e\n\u003ch3\u003eAdvanced Dosing Formula\u003c\/h3\u003e\n\u003cp\u003eEach 1 mL of Calcion raises calcium by approximately 40 ppm in 1 US gallon.\u003c\/p\u003e\n\u003cp\u003eUse this formula to calculate the total amount needed:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRequired mL = Aquarium gallons × desired calcium increase ÷ 40\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch4\u003eExample\u003c\/h4\u003e\n\u003cp\u003eTo raise calcium by 20 ppm in a 100-gallon aquarium:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e100 × 20 ÷ 40 = 50 mL\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe calculated total should remain within the manufacturer’s maximum daily correction rate. Large deficiencies should be corrected gradually while calcium, alkalinity, magnesium, and salinity are monitored.\u003c\/p\u003e\n\u003ch3\u003eApproximate Dose to Raise Calcium by 10 ppm\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 Gallons:\u003c\/strong\u003e Approximately 5 mL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e40 Gallons:\u003c\/strong\u003e Approximately 10 mL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 Gallons:\u003c\/strong\u003e Approximately 12.5 mL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e75 Gallons:\u003c\/strong\u003e Approximately 18.75 mL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100 Gallons:\u003c\/strong\u003e Approximately 25 mL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e125 Gallons:\u003c\/strong\u003e Approximately 31.25 mL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e150 Gallons:\u003c\/strong\u003e Approximately 37.5 mL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e200 Gallons:\u003c\/strong\u003e Approximately 50 mL\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCalculate from the system’s actual water volume after accounting for displacement from rock, sand, and equipment.\u003c\/p\u003e\n\u003ch3\u003eDetermining a Daily Maintenance Dose\u003c\/h3\u003e\n\u003cp\u003eAfter calcium has reached the desired range, test it at approximately the same time each day for one to two weeks.\u003c\/p\u003e\n\u003cp\u003eCalculate the average daily calcium decrease, then use:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDaily dose in mL = Aquarium gallons × daily calcium decrease ÷ 40\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSmaller daily doses generally maintain more stable calcium than one large weekly addition.\u003c\/p\u003e\n\u003ch3\u003eHow Much Does the 500 mL Bottle Treat?\u003c\/h3\u003e\n\u003cp\u003eAt the basic dosage of 5 mL per 50 gallons:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA 500 mL bottle provides approximately 100 standard doses and treats up to 5,000 cumulative gallons.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eExamples include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eApproximately 100 basic doses for a 50-gallon aquarium\u003c\/li\u003e\n\u003cli\u003eApproximately 50 basic doses for a 100-gallon aquarium\u003c\/li\u003e\n\u003cli\u003eApproximately 25 basic doses for a 200-gallon aquarium\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eActual product life depends on aquarium size, coral growth, initial calcium level, salt mix, water changes, and daily calcium demand.\u003c\/p\u003e\n\u003ch3\u003eDoes Calcion Raise Alkalinity?\u003c\/h3\u003e\n\u003cp\u003eNo. Calcion is a calcium-specific supplement and does not provide the carbonate or bicarbonate needed to maintain alkalinity.\u003c\/p\u003e\n\u003cp\u003eAlkalinity should be tested and supplemented separately when required. Brightwell Reef Code B is an example of a separate alkalinity product, while Reef Code A and B are designed as a balanced two-part system.\u003c\/p\u003e\n\u003ch3\u003eDoes Calcion Raise Magnesium?\u003c\/h3\u003e\n\u003cp\u003eNo. Calcion does not provide meaningful magnesium supplementation.\u003c\/p\u003e\n\u003cp\u003eMagnesium should be tested separately because low magnesium can make calcium and alkalinity more difficult to maintain. Brightwell Magnesion is intended for magnesium supplementation when testing confirms a deficiency.\u003c\/p\u003e\n\u003ch3\u003eCalcion vs. Reef Code A\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcion:\u003c\/strong\u003e Highly concentrated calcium-only supplement for independent calcium adjustment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReef Code A:\u003c\/strong\u003e Calcium-bearing part of a two-part system designed for equal use with Reef Code B\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eChoose Calcion when calcium needs to be adjusted independently. Choose Reef Code A and B when a balanced two-part calcium and alkalinity program is preferred.\u003c\/p\u003e\n\u003ch3\u003eCalcion vs. Calcion-P\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcion:\u003c\/strong\u003e Ready-to-use concentrated liquid calcium supplement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcion-P:\u003c\/strong\u003e Powdered calcium chloride that must be dissolved before use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe liquid formula is convenient for direct measurement and dosing pumps. The powdered formula may be more economical for large aquariums or facilities maintaining multiple reef systems.\u003c\/p\u003e\n\u003ch3\u003eIs Calcion Different from Calcium Chloride?\u003c\/h3\u003e\n\u003cp\u003eCalcion is made with calcium chloride. The calcium is supplied in ionic form once dissolved in water.\u003c\/p\u003e\n\u003cp\u003eIts distinguishing features are its high concentration, purified water, high-purity ingredients, and absence of phosphate, silicate, and organic complexing agents.\u003c\/p\u003e\n\u003ch3\u003eUsing Calcion with Alkalinity Supplements\u003c\/h3\u003e\n\u003cp\u003eCalcium and alkalinity supplements should be added separately into areas of strong water movement.\u003c\/p\u003e\n\u003cp\u003eDo not mix concentrated Calcion directly with an alkalinity supplement in the same container. The concentrated calcium and carbonate may react and form insoluble calcium carbonate.\u003c\/p\u003e\n\u003cp\u003eAllow the first supplement to disperse before adding the second product in a different high-flow area.\u003c\/p\u003e\n\u003ch3\u003eUsing Calcion with Magnesium Supplements\u003c\/h3\u003e\n\u003cp\u003eCalcion may be used with Magnesion or another appropriate marine magnesium supplement. Test both parameters and dose them according to their individual requirements.\u003c\/p\u003e\n\u003cp\u003eCorrecting low magnesium may be necessary before calcium and alkalinity can be maintained consistently.\u003c\/p\u003e\n\u003ch3\u003eUsing Calcion with Kalkwasser\u003c\/h3\u003e\n\u003cp\u003eKalkwasser supplies both calcium and alkalinity. Calcion may still be used when kalkwasser does not meet the aquarium’s full calcium demand, but total supplementation must be calculated carefully.\u003c\/p\u003e\n\u003cp\u003eMonitor:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCalcium\u003c\/li\u003e\n\u003cli\u003eAlkalinity\u003c\/li\u003e\n\u003cli\u003eMagnesium\u003c\/li\u003e\n\u003cli\u003epH\u003c\/li\u003e\n\u003cli\u003eSalinity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDo not add a full Calcion dose automatically when another system is already supplying calcium.\u003c\/p\u003e\n\u003ch3\u003eUsing Calcion with a Calcium Reactor\u003c\/h3\u003e\n\u003cp\u003eA calcium reactor may supply calcium and alkalinity continuously. Calcion can be used for independent corrections when calcium remains below target, but reactor operation and alkalinity should also be reviewed.\u003c\/p\u003e\n\u003cp\u003eRepeatedly needing large calcium corrections may indicate that the reactor, dosing program, or magnesium concentration is not properly balanced.\u003c\/p\u003e\n\u003ch3\u003eAutomated Dosing\u003c\/h3\u003e\n\u003cp\u003eCalcion may be used with a properly calibrated dosing pump after the aquarium’s average daily calcium consumption has been determined.\u003c\/p\u003e\n\u003cp\u003eBefore automating:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm the required daily dose manually\u003c\/li\u003e\n\u003cli\u003eCalibrate the dosing pump\u003c\/li\u003e\n\u003cli\u003eUse compatible tubing and a secure reservoir\u003c\/li\u003e\n\u003cli\u003ePrevent siphoning or accidental continuous dosing\u003c\/li\u003e\n\u003cli\u003eKeep calcium and alkalinity solutions in separate containers\u003c\/li\u003e\n\u003cli\u003eRetest calcium regularly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAutomated dosing should be adjusted as coral growth and aquarium demand change.\u003c\/p\u003e\n\u003ch3\u003eCan Calcion Cause Cloudy Water?\u003c\/h3\u003e\n\u003cp\u003eCalcion itself should normally disperse without creating persistent cloudiness. Cloudiness or white deposits after dosing may indicate calcium-carbonate precipitation.\u003c\/p\u003e\n\u003cp\u003ePossible causes include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCalcium and alkalinity supplements added too close together\u003c\/li\u003e\n\u003cli\u003eExcessively high pH\u003c\/li\u003e\n\u003cli\u003eExcess calcium or alkalinity\u003c\/li\u003e\n\u003cli\u003eLow magnesium\u003c\/li\u003e\n\u003cli\u003ePoor water circulation at the dosing location\u003c\/li\u003e\n\u003cli\u003eAdding a concentrated dose too quickly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eStop dosing temporarily and test calcium, alkalinity, magnesium, and pH if precipitation occurs.\u003c\/p\u003e\n\u003ch3\u003eCan Calcion Be Overdosed?\u003c\/h3\u003e\n\u003cp\u003eYes. Excessive calcium can disrupt the balance between calcium, alkalinity, and magnesium and may encourage calcium-carbonate precipitation.\u003c\/p\u003e\n\u003cp\u003eDo not dose based only on aquarium size. Test calcium and add only the amount required to reach or maintain the desired range.\u003c\/p\u003e\n\u003cp\u003eIf calcium becomes excessively high, stop dosing and allow normal consumption or gradual water changes to lower the concentration.\u003c\/p\u003e\n\u003ch3\u003eDoes Calcion Directly Improve Coral Color?\u003c\/h3\u003e\n\u003cp\u003eCalcion supplies calcium required for calcification, but it does not directly color corals or guarantee faster growth.\u003c\/p\u003e\n\u003cp\u003eCoral growth and coloration also depend on:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable alkalinity\u003c\/li\u003e\n\u003cli\u003eAppropriate magnesium\u003c\/li\u003e\n\u003cli\u003eSuitable lighting\u003c\/li\u003e\n\u003cli\u003eBalanced nitrate and phosphate\u003c\/li\u003e\n\u003cli\u003eWater flow\u003c\/li\u003e\n\u003cli\u003eFeeding\u003c\/li\u003e\n\u003cli\u003eStable salinity and temperature\u003c\/li\u003e\n\u003cli\u003eFreedom from pests and disease\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStorage and Handling\u003c\/h3\u003e\n\u003cp\u003eKeep the bottle tightly closed and store it indoors in a cool location away from direct sunlight and excessive heat.\u003c\/p\u003e\n\u003cp\u003ePrevent aquarium water or contaminated dosing equipment from entering the bottle.\u003c\/p\u003e\n\u003cp\u003eKeep out of reach of children. Not for human consumption. Intended for ornamental marine aquarium use only.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is Brightwell Calcion used for?\u003c\/strong\u003e\u003cbr\u003eIt raises and maintains calcium in marine and reef aquariums.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat calcium range does Brightwell recommend?\u003c\/strong\u003e\u003cbr\u003eMaintain calcium between approximately 412 and 450 ppm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the standard dose?\u003c\/strong\u003e\u003cbr\u003eAdd 5 mL per 50 gallons every other day or as needed based on testing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much does 1 mL raise calcium?\u003c\/strong\u003e\u003cbr\u003eOne milliliter raises calcium by approximately 40 ppm in 1 gallon of water.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum correction dose?\u003c\/strong\u003e\u003cbr\u003eDo not exceed 10 mL per 20 gallons daily.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much does the 500 mL bottle treat?\u003c\/strong\u003e\u003cbr\u003eAt the basic dose, it treats up to approximately 5,000 cumulative gallons.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs Calcion calcium chloride?\u003c\/strong\u003e\u003cbr\u003eYes. Its ingredients are purified water and calcium chloride.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes Calcion raise alkalinity?\u003c\/strong\u003e\u003cbr\u003eNo. Alkalinity must be tested and supplemented separately when needed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes Calcion raise magnesium?\u003c\/strong\u003e\u003cbr\u003eNo. Magnesium should be monitored and adjusted separately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan Calcion be used with a dosing pump?\u003c\/strong\u003e\u003cbr\u003eYes, after determining the aquarium’s actual daily calcium consumption and properly calibrating the pump.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be used with alkalinity supplements?\u003c\/strong\u003e\u003cbr\u003eYes, but dose the products separately and never mix the concentrates together.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be used with kalkwasser?\u003c\/strong\u003e\u003cbr\u003eYes, when testing confirms additional calcium is required. Account for the calcium and alkalinity already supplied by kalkwasser.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs Calcion reef safe?\u003c\/strong\u003e\u003cbr\u003eYes, when dosed according to accurate calcium testing and the manufacturer’s directions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes Calcion contain phosphate or silicate?\u003c\/strong\u003e\u003cbr\u003eBrightwell states that it is free of phosphate and silicate.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it contain EDTA or gluconate?\u003c\/strong\u003e\u003cbr\u003eNo. Brightwell states that it contains no EDTA, gluconate, polygluconate, or other unwanted organic material.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan Calcion be used in freshwater aquariums?\u003c\/strong\u003e\u003cbr\u003eNo. It is formulated for marine and reef aquarium chemistry.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes Calcion replace water changes?\u003c\/strong\u003e\u003cbr\u003eNo. It replaces consumed calcium but does not remove waste or replace normal aquarium maintenance.\u003c\/p\u003e\n\u003ch3\u003eAvailable at Tropical Treasures Wyo\u003c\/h3\u003e\n\u003cp\u003eBrightwell Aquatics Calcion 500 mL provides highly concentrated ionic calcium for maintaining reef aquarium calcium levels and supporting corals, clams, coralline algae, and other calcifying organisms.\u003c\/p\u003e\n\u003cp\u003eVisit Tropical Treasures Wyo in Cheyenne, Wyoming, to shop Brightwell Calcion, Reef Code A and B, Magnesion, calcium and alkalinity test kits, dosing pumps, reef salt mixes, and marine aquarium supplies.\u003c\/p\u003e","brand":"Tropical Treasures Wyo LLC","offers":[{"title":"Default Title","offer_id":53005236797653,"sku":null,"price":17.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/4545\/8133\/files\/BRI01010-2T.png?v=1785017458","url":"https:\/\/tropicaltreasureswyo.com\/products\/brightwell-calcion-500ml","provider":"Tropical Treasures Wyo LLC","version":"1.0","type":"link"}