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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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  • 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...
  • On Sale 25%
    Calcion - Liquid Calcium Supplement (250mL) - Brightwell
    On Sale 25%

    Calcion - Liquid Calcium Supplement (250mL) - Brightwell

    Brightwell Aquatics

    $10.15
    $7.61
    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...
  • 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...
  • 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

    $25.29
    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...
  • 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...
  • 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...
  • 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...
  • On Sale 25%
    Bulk Pharma Calcium Chloride (35 Pounds) - Bulk Reef Supply
    On Sale 25%

    Bulk Pharma Calcium Chloride (35 Pounds) - Bulk Reef Supply

    Bulk Reef Supply

    $199.99
    $149.99
    Bulk Pharma Calcium Chloride - Ultra Pure Calcium Additive for your Reef Tank! Bulk Reef Supply 2-part additives are the perfect solution to replenish the intake of calcium and alkalinity coral consumes when it grows. Using only pharmaceutical...
  • On Sale 25%
    Calcion - Liquid Calcium Supplement (500mL) - Brightwell
    On Sale 25%

    Calcion - Liquid Calcium Supplement (500mL) - Brightwell

    Brightwell Aquatics

    $17.31
    $12.98
    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 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 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™...
  • Carbo-Calcium (1000 ml) - Tropic Marin

    Carbo-Calcium (1000 ml) - Tropic Marin

    Tropic Marin

    $33.60
    Tropic Marin® Carbo-Calcium is highly concentrated calcium and alkalinity for dissolving in reverse osmosis water to get the proven Carbocalcium solution. After dissolving, one single solution can cover all the calcium and alkalinity...
  • Purple Up (4 oz) - Caribsea

    Purple Up (4 oz) - Caribsea

    Caribsea

    $7.94
    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 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™...
  • 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...
  • Fritz RPM Liquid Calcium Elements (32 oz) Part 2 - Fritz

    Fritz RPM Liquid Calcium Elements (32 oz) Part 2 - Fritz

    Fritz Aquatics

    $11.43
    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...
  • On Sale 25%
    Calcion P - Dry Calcium Supplement (3.2kg) - Brightwell
    On Sale 25%

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

    Brightwell Aquatics

    $98.73
    $74.05
    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...
  • 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

    $19.79
    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...
  • 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...
  • ION-B CA/MG+ Liquid (2000mL) - NYOS

    ION-B CA/MG+ Liquid (2000mL) - NYOS

    NYOS

    $19.99
    Balanced Calcium and Magnesium Support for Modern Reef Tanks Pre-Mixed, Ready-to-use Solution Increases Calcium and Magnesium Also Contains Strontium, Potassium, and Boron for Ion Balancing ION-B CA/MG+ liquid is a concentrated ready-to-use...
  • 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™...
  • ION ELEMENTS 2 CA/MG (250mL) - NYOS

    ION ELEMENTS 2 CA/MG (250mL) - NYOS

    NYOS

    $16.99
    Designed to Be Added to the Nyos ION-B CA/MG+ Solution Trace Element Mixtures Based on Real Reef Tank Consumption Contains: Chromium, Iron, Cobalt, Copper, Manganese, Nickel, Vanadium, Zinc Adjustable Based on Your Tank's Consumption The...
  • ION ELEMENTS 1 CA/MG (250mL) - NYOS

    ION ELEMENTS 1 CA/MG (250mL) - NYOS

    NYOS

    $16.99
    Designed to Be Added to the Nyos ION-B CA/MG+ Solution Trace Element Mixtures Based on Real Reef Tank Consumption Contains: Molybdenum, Rubidium, Strontium Adjustable Based on Your Tank's Consumption The introduction of modern water analysis...
  • Fritz RPM Liquid Calcium Elements (5 Gallons) Part 2 - Fritz

    Fritz RPM Liquid Calcium Elements (5 Gallons) Part 2 - Fritz

    Fritz Aquatics

    $89.99
    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...
  • On Sale 25%
    Calcion P - Dry Calcium Supplement (16kg) - Brightwell
    On Sale 25%

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

    Brightwell Aquatics

    $313.61
    $235.21
    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 (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...