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Highly concentrated liquid calcium supplement for reef aquariums Over 50 percent stronger than most competing calcium supplements Provides calcium to corals and other reef-building invertebrates Ionic calcium solution contains no unwanted organic material such as EDTA or gluconate. Highly concentrated Calcion increases calcium concentration in marine aquarium water to provide corals and other reef-building invertebrates with one of the most important elements required for growth. Formulated by a marine scientist, Calcion is over 50 percent stronger than most competing calcium supplements and is free of phosphate, silicate, and organic material. 17 oz treats up to 5,000 gallonsPlease click on "More Information" for instructions and guideline.

Highly concentrated liquid calcium supplement for reef aquariums Over 50 percent stronger than most competing calcium supplements Provides calcium to corals and other reef-building invertebrates Ionic calcium solution contains no unwanted organic material such as EDTA or gluconate. Highly concentrated Calcion increases calcium concentration in marine aquarium water to provide corals and other reef-building invertebrates with one of the most important elements required for growth. Formulated by a marine scientist, Calcion is over 50 percent stronger than most competing calcium supplements and is free of phosphate, silicate, and organic material. 17 oz treats up to 5,000 gallonsPlease click on "More Information" for instructions and guideline.

Easy to use, professional-quality calcium test kitsEach calcium test lab converts into a workstationMeasures Calcium (Ca2+ ion) in saltwater aquarium waterProfessional test kits for saltwater that are user-friendly. Each kit converts into an individual workstation so you can have all of your testing supplies ready to use in one convenient location. Kits include liquid reagent(s), test tube, test tube covers, color chart, and instructions. Each kit contains everything you need including why and when the tests should be performed and recommendations on aquarium maintenance. Calcium is an easy, economical way to check calcium levels. Premium Calcium Pro is for the advanced reefkeeper with a higher accuracy, essential for the successful use of calcium supplements. Accuracy to 10 ppm.Please click on "More Information" for instructions for use and further testing information.

Easy to use, professional-quality calcium test kitsEach calcium test lab converts into a workstationMeasures Calcium (Ca2+ ion) in saltwater aquarium waterProfessional test kits for saltwater that are user-friendly. Each kit converts into an individual workstation so you can have all of your testing supplies ready to use in one convenient location. Kits include liquid reagent(s), test tube, test tube covers, color chart, and instructions. Each kit contains everything you need including why and when the tests should be performed and recommendations on aquarium maintenance. Calcium is an easy, economical way to check calcium levels. Premium Calcium Pro is for the advanced reefkeeper with a higher accuracy, essential for the successful use of calcium supplements. Accuracy to 10 ppm.Please click on "More Information" for instructions for use and further testing information.

Advanced calcium supplement for marine aquariumsMakes it easy to rapidly adjust calcium levels in aquariumsHelps maintain optimum water quality for growth of aquarium inhabitantsJulian Sprung's Reef Formula Calcium Concentrate rapidly raises the calcium concentration when the alkalinity level is already high. Also simultaneously lowers the alkalinity level, bringing both closer to a natural seawater ratio. When the calcium and alkalinity levels are properly balanced, stop using Calcium Concentrate, and continue using a balanced ion supplement such as Kalkwasser or C-Balance, which maintain alkalinity in addition to calcium concentration. Phosphate-, nitrate- and silicate-free. For marine aquariums. Add 1 tsp per 10 gallons.Please click on "More Information" for dosage, ingredients, and more.

Concentrated liquid calcium supplement great for reef aquariumsBio-available calcium helps ensure healthy coral growthBuffered reef supplement also helps maintain aquarium pHConcentrated calcium solution produces stronger skeletons for better coral growth. Vitamin D fortified Calcium Concentrate contains over 100,000 mg/L of calcium in a biologically available form. No-mix solution means no chalky residue like some powdered calcium formulations. Buffered to help maintain proper pH in reef and marine aquariums. 16 oz of Calcium Concentrate plus Buffer treats up to 2,360 gallons; 64 oz treats up to 9,440 gallons. Shake well before use.Suggested use: Add 1-2 capfuls (7-14 ml) per 50 gallons of water 1 to 2 times per week. Each 7 ml capful restores 3.5 ppm of calcium.Please click on "More Information" for recommended dosage and ingredients.

Sodium Hydroxide

Easy-to-use and accurate test kit for CalciumEssential test for maintaining optimum water quality in saltwater aquariumsSimplifies testing of essential reef aquarium parameters for healthy coral growthFast and convenient way to test and monitor vital calcium and alkalinity levels in reef aquariums. Instant Ocean individual test kits make saltwater testing easier than ever. Accurate liquid titration tests with easy-to-use dropper-top reagent simplify regular testing and ensure reliable results. Test and measure calcium and to ensure ideal water parameters for healthy coral growth. Also use to determine the need for water changes or supplements. Ideal for use with all marine and reef aquariums. Number of individual calcium tests vary by sample water.Alkalinity Test (Routine or Precision test) - Range: 0 to 5.0 mEq/L-->Calcium Test - Range: 0 to 500 milligrams/liter Calcium (Ca)Please click on "More Information" for directions for use.