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Calcium

Calcium Supplements

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Corals, clams and certain types of algae have to have calcium in order to grow. They consume calcium and can quickly deplete the supply. Ocean water has a calcium level that ranges from 380 - 450 mg/L. It can be difficult or impossible to keep the levels this high in a home aquarium. But, there are several ways that you can increase the calcium levels. One of the most popular ways is by using reactors.

Calcium reactors can be used to add dosages of calcium to your aquarium. And, Kalkreactors can add dosages of Kalkwasser. If you prefer you can also use a diluted calcium chloride to dose, but it is more expensive. Liquid calcium also poses a problem. You will need to use carbonate or bicarbonate as a buffer because you are taking the risk of lowering the levels of alkalinity. If this method is something you are interested in, you may want to consider using a two part calcium/alkalinity solution.

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  • Calcion P - Dry Calcium Supplement (16kg) - Brightwell

    Calcion P - Dry Calcium Supplement (16kg) - Brightwell

    Brightwell Aquatics

    $198.25
    Calcium Supplement for All Marine Fish & Reef Aquaria Overview High-purity powdered calcium. Increases the concentration of calcium in marine aquarium water to provide corals andother reef-building invertebrates with one of the most important...
  • Reef Foundation A - Calcium (CA) - (5 Liter / 1.32 Gal) - Red Sea

    Reef Foundation A - Calcium (CA) - (5 Liter / 1.32 Gal) - Red Sea

    Red Sea

    $109.00
    Calcium+ Supplement Calcium and Strontium complex for balanced formation of the coral skeleton It’s all in the balance Calcium, Magnesium, Strontium and Carbonate are the basic foundation elements of coral skeletons.All of these elements...
  • Reef Advantage Calcium (4KG)- Seachem

    Reef Advantage Calcium (4KG)- Seachem

    Seachem

    $96.71
    Reef Advantage Calcium™ is a non-caustic (pH 8.3–8.6) optimized blend of ionic calcium designed to restore and maintain calcium to levels found in natural seawater. Calcium and carbonates are essential to all coral growth. If either becomes...
  • Purple Up (1 Gallon) - Caribsea

    Purple Up (1 Gallon) - Caribsea

    Caribsea

    $92.49
    PurpleUp™ - uses a unique dual method approach to coralline algae acceleration. This approach is so unique that PurpleUp has been awarded a US patent (US patent No. 7,565,883). It contains ionic calcium; which immediately raises dissolved calcium...
  • All For Reef Powder (1600g) - Tropic Marin

    All For Reef Powder (1600g) - Tropic Marin

    Tropic Marin

    $75.04
    Tropic Marin® All-For-Reef Powder is an ultra-concentrated mineral blend, with which an easy-to-use, highly concentrated all-round solution for supplying all key minerals and trace elements in newly established and averaged reef aquariums...
  • Skeletal Elements - Reef Foundation ABC+ (5 KG Bucket) -  Red Sea

    Skeletal Elements - Reef Foundation ABC+ (5 KG Bucket) - Red Sea

    Red Sea

    $74.99
    "Foundation and trace element supplement for balanced formation of coral skeleton Ca | Mg | KH | Sr| Ba | K | I SKELETAL ELEMENTS is a blend of all of the corals foundation elements of coral skeletons: Calcium, magnesium, strontium & carbonate,...
  • Calcion P - Dry Calcium Supplement (3.2kg) - Brightwell

    Calcion P - Dry Calcium Supplement (3.2kg) - Brightwell

    Brightwell Aquatics

    $62.40
    Calcium Supplement for All Marine Fish & Reef Aquaria Overview High-purity powdered calcium. Increases the concentration of calcium in marine aquarium water to provide corals andother reef-building invertebrates with one of the most important...
  • CaCl2 Dihydrate Calcium Increaser (4000 g) - Triton

    CaCl2 Dihydrate Calcium Increaser (4000 g) - Triton

    Triton

    $52.00
    Highly pure Calcium Chloride Dihydrate (CaCl2.2H2O) for increasing calcium. TRITON DIY salts are packed in-house using only the purest ingredients, tested and quality controlled within TRITON Lab.  These products are suitable for 2-Part, 3-Part or...
  • All For Reef Powder (800g) - Tropic Marin

    All For Reef Powder (800g) - Tropic Marin

    Tropic Marin

    $47.18
    Tropic Marin® All-For-Reef Powder is an ultra-concentrated mineral blend, with which an easy-to-use, highly concentrated all-round solution for supplying all key minerals and trace elements in newly established and averaged reef aquariums...
  • Original Balling Set Powder (3 kg) - Tropic Marin

    Original Balling Set Powder (3 kg) - Tropic Marin

    Tropic Marin

    $45.39
    Tropic Marin® Original Balling Components are the three salts used in the Balling method to allow an independent dosage of calcium and carbonates adapted to each individual aquarium. The three part method adds calcium chloride dihydrate (part...
  • Calcion - Liquid Calcium Supplement (2L) - Brightwell

    Calcion - Liquid Calcium Supplement (2L) - Brightwell

    Brightwell Aquatics

    $40.64
    Concentrated Calcium Supplement for All Marine Fish & Reef Aquaria Overview Highly-concentrated ionic calcium solution. Increases the concentration of calcium in marine aquarium water to provide coralsand other reef-building invertebrates with...
  • Reef Complete (2L) - Seachem

    Reef Complete (2L) - Seachem

    Seachem

    $40.61
    Reef Complete® is a concentrated (160,000 mg/L) optimized blend of ionic calcium designed to restore and maintain calcium to levels found in natural seawater without affecting pH. Calcium and carbonates are essential to all coral growth. If either...
  • Reef Calcium (2L) - Seachem

    Reef Calcium (2L) - Seachem

    Seachem

    $40.61
    Reef Calcium™ is a concentrated (50,000 mg/L) bioavailable polygluconate complexed calcium intended to maintain calcium in the reef aquarium without altering pH. Polygluconate complexation confers several benefits: it increases the bioavailability...
  • Ready 2 Reef All In One Dosing Solution (1000 mL) - Fauna Marin

    Ready 2 Reef All In One Dosing Solution (1000 mL) - Fauna Marin

    Fauna Marin

    $39.99
    Everything You Need in One Bottle Fauna Marin Ready2Reef is a concentrated solution that provides a reef tank with calcium, magnesium, carbonate hardness, and all-important micro and trace elements. It is suitable for starting and...
  • All For Reef (1000 ml) - Tropic Marin

    All For Reef (1000 ml) - Tropic Marin

    Tropic Marin

    $36.83
    ALL-FOR-REEF is an easy- to-use, highly concentrated solution for the supply of ALL essential minerals and trace elements in new or moderately stocked reef aquariums. Benefits: Complete mineral supply in only one solution The most...
  • Reef Reactor Large (4 L) Calcium Reactor Media - Seachem

    Reef Reactor Large (4 L) Calcium Reactor Media - Seachem

    Seachem

    $32.52
    Reef Reactor™ is a high-purity source of aragonite, which supplies all important elements for optimal ionic balance and robust coral growth and coloration in reef aquaria. It has a grain size of approximately 0.5–1 cm (Reef Reactor™...
  • Reef Reactor Medium (4 L) Calcium Reactor Media - Seachem

    Reef Reactor Medium (4 L) Calcium Reactor Media - Seachem

    Seachem

    $32.52
    Reef Reactor™ is a high-purity source of aragonite, which supplies all important elements for optimal ionic balance and robust coral growth and coloration in reef aquaria. It has a grain size of approximately 0.5–1 cm (Reef Reactor™...
  • Bio Calcium Supplement Powder (1800 g - 64 oz) - Tropic Marin

    Bio Calcium Supplement Powder (1800 g - 64 oz) - Tropic Marin

    Tropic Marin

    $32.42
    Biologically ideal calcium supplement for reef aquariums using the Balling method Calcium is one of the most important elements in seawater, as together with carbon dioxide it is required for the skeletons of fishes and corals in the form of calcium...
  • Reef Fusion "1" Two Part Calcium/Buffer System (4 L) - Seachem

    Reef Fusion "1" Two Part Calcium/Buffer System (4 L) - Seachem

    Seachem

    $32.33
    Reef Fusion 1™ and Reef Fusion 2™ are the foundation of a system formulated to provide the essentials for the reef aquarium. Reef Fusion 1™ provides calcium, while Reef Fusion 2™ provides alkalinity. When used together, the Reef...
  • Reef Foundation A Dry - Calcium (CA) (1 KG) Powder - Red Sea

    Reef Foundation A Dry - Calcium (CA) (1 KG) Powder - Red Sea

    Red Sea

    $31.99
    Calcium+ Supplement Calcium and Strontium complex for balanced formation of the coral skeleton It’s all in the balance Calcium, Magnesium, Strontium and Carbonate are the basic foundation elements of coral skeletons.All of these elements...
  • Sea Lab #28 Automatic Replenisher 24 Blocks (2 lb Box) - Sea-Lab

    Sea Lab #28 Automatic Replenisher 24 Blocks (2 lb Box) - Sea-Lab

    All Misc Brands

    $29.99
    Automatically controls concentrations of 28 elements including calcium, strontium and all 15 essential trace elements. Removes heavy metals and limits ammonia and phosphate while helping to buffer aquarium pH. Available in: 1/2 lb Container (as pictured)...
  • Reef Foundation A - Calcium (CA) (1000 ml) Liquid - Red Sea

    Reef Foundation A - Calcium (CA) (1000 ml) Liquid - Red Sea

    Red Sea

    $28.99
    Calcium+ Supplement Calcium and Strontium complex for balanced formation of the coral skeleton It’s all in the balance Calcium, Magnesium, Strontium and Carbonate are the basic foundation elements of coral skeletons.All of these elements...
  • Reef Advantage Calcium (1KG) - Seachem

    Reef Advantage Calcium (1KG) - Seachem

    Seachem

    $26.74
    Reef Advantage Calcium™ is a non-caustic (pH 8.3–8.6) optimized blend of ionic calcium designed to restore and maintain calcium to levels found in natural seawater. Calcium and carbonates are essential to all coral growth. If either becomes...
  • Calcion P - Dry Calcium Supplement (800g) - Brightwell

    Calcion P - Dry Calcium Supplement (800g) - Brightwell

    Brightwell Aquatics

    $23.58
    Calcium Supplement for All Marine Fish & Reef Aquaria Overview High-purity powdered calcium. Increases the concentration of calcium in marine aquarium water to provide corals andother reef-building invertebrates with one of the most important...
  • Reef BluePrint Coral8 Yin (1006mL) - Captiv8 Aquaculture

    Reef BluePrint Coral8 Yin (1006mL) - Captiv8 Aquaculture

    Captiv8 Aquaculture

    $22.99
    Parameter Value Calcium 146,600 ppm Strontium 2,932 ppm Magnesium 407 ppm Bromide 45 ppm Potassium 22 ppm Characteristics Active Components: Calcium chloride, FCC; Strontium chloride, USP; Magnesium...
  • Ready 2 Reef All In One Dosing Solution (500 mL) - Fauna Marin

    Ready 2 Reef All In One Dosing Solution (500 mL) - Fauna Marin

    Fauna Marin

    $22.99
    Everything You Need in One Bottle Fauna Marin Ready2Reef is a concentrated solution that provides a reef tank with calcium, magnesium, carbonate hardness, and all-important micro and trace elements. It is suitable for starting and...
  • Calcion - Liquid Calcium Supplement (500mL) - Brightwell

    Calcion - Liquid Calcium Supplement (500mL) - Brightwell

    Brightwell Aquatics

    $22.00
    Concentrated Calcium Supplement for All Marine Fish & Reef Aquaria Overview Highly-concentrated ionic calcium solution. Increases the concentration of calcium in marine aquarium water to provide coralsand other reef-building invertebrates with...