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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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  • All For Reef (500 ml) - Tropic Marin

    All For Reef (500 ml) - Tropic Marin

    Tropic Marin

    $21.82
    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 Foundation A - Calcium (CA) (500 ml) Liquid - Red Sea

    Reef Foundation A - Calcium (CA) (500 ml) Liquid - Red Sea

    Red Sea

    $19.99
    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...
  • Purple Up (16 oz) - Caribsea

    Purple Up (16 oz) - Caribsea

    Caribsea

    $18.49
    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...
  • Reef Fusion "1" Two Part Calcium/Buffer System (2 L) - Seachem

    Reef Fusion "1" Two Part Calcium/Buffer System (2 L) - Seachem

    Seachem

    $21.44
    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 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...
  • Purple Up (8 oz) - Caribsea

    Purple Up (8 oz) - Caribsea

    Caribsea

    $11.75
    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...
  • Reef Complete (500 mL) - Seachem

    Reef Complete (500 mL) - Seachem

    Seachem

    $11.33
    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...
  • 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 Calcium (500 mL) - Seachem

    Reef Calcium (500 mL) - Seachem

    Seachem

    $11.33
    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...
  • Reef Advantage Calcium (500g) - Seachem

    Reef Advantage Calcium (500g) - Seachem

    Seachem

    $15.46
    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 (4 oz) - Caribsea

    Purple Up (4 oz) - Caribsea

    Caribsea

    $8.75
    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...
  • Fritz RPM Liquid Calcium Elements (16 oz) Part 2 - Fritz

    Fritz RPM Liquid Calcium Elements (16 oz) Part 2 - Fritz

    Fritz Aquatics

    $8.79
    It is impossible to maintain a healthy, vibrant marine aquarium without also maintaining the proper levels of calcium and alkalinity. FRITZ RPM CALCIUM/BUFFER SYSTEM allows aquarists to maintain these two critical components in their proper ionic balance...
  • Reef Fusion "1" Two Part Calcium/Buffer System (1 L) - Seachem

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

    Seachem

    $14.32
    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 Advantage Calcium (250g) - Seachem

    Reef Advantage Calcium (250g) - Seachem

    Seachem

    $8.99
    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...
  • Reef Fusion "1" Two Part Calcium/Buffer System (500 mL) - Seachem

    Reef Fusion "1" Two Part Calcium/Buffer System (500 mL) - Seachem

    Seachem

    $8.92
    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...
  • 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...
  • Reef Complete (250 mL) - Seachem

    Reef Complete (250 mL) - Seachem

    Seachem

    $7.38
    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 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 (250 mL) - Fauna Marin

    Ready 2 Reef All In One Dosing Solution (250 mL) - Fauna Marin

    Fauna Marin

    $17.99
    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...
  • Bio-Calcium Supplement Powder (500 g - 18 oz) - Tropic Marin

    Bio-Calcium Supplement Powder (500 g - 18 oz) - Tropic Marin

    Tropic Marin

    $14.10
    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 Reactor Medium (2 L) Calcium Reactor Media - Seachem

    Reef Reactor Medium (2 L) Calcium Reactor Media - Seachem

    Seachem

    $21.23
    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 BluePrint Coral8 Yin (355mL) - Captiv8 Aquaculture

    Reef BluePrint Coral8 Yin (355mL) - Captiv8 Aquaculture

    Captiv8 Aquaculture

    $11.99
    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...
  • REEF SHOT - Calcium (24 Shots, 16 oz)  - ASF

    REEF SHOT - Calcium (24 Shots, 16 oz) - ASF

    ASF

    $18.50
    Many reef organisms synthesise calcium and strontium to form shells or skeleton from the seawater. Strontium Reef Shot is a quick and easy way to increase or maintain the optimum concentration of strontium in a reef aquarium; an essential role in...