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Calcium

NSW contains 400 - 450 mg/L calcium Which is also the value we should strive for.

Calcium is a major constituent of calcareous algae, the skeletal material of hard corals and the skeletal needles of soft corals. Calcium also fulfils many biological functions.

In a healthy aquarium the growth of these and other organisms results in calcium depletion.

Without a sufficient amount of dissolved calcium in the water, many reef organisms will not grow and develop properly.

Fluctuation in calcium levels should be avoided.

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  • Caribsea AragaMilk Liquid Aragonite Calcium 236ml
    Ideal for African cichlids, livebearers, and marine aquariums of all types! The perfect alkalinity booster because...aragaMILK™ has a full pound of buffer in every 473ml bottle. This buffer comes in two forms: bicarbonate for immediate response, plus carbonate from aragonite. This second form makes ..
    $22.90 Ex Tax: $19.91
  • Caribsea ReefCal Ionic Calcium Solution 236ml
    ReefCal - is a 100,000 ppm ionic calcium solution. ReefCal will raise calcium levels by just over 5 ppm per capful (5ml) per 95 litres of water. Use a good quality test kit to monitor dissolved calcium levels in the aquarium. ReefCal should be used with a buffer like BufferPlus...
    $19.90 Ex Tax: $17.30
  • Caribsea ReefCal Ionic Calcium Solution 473ml
    ReefCal™ - is a 100,000 ppm ionic calcium solution. ReefCal™ will raise calcium levels by just over 5 ppm per capful (5ml) per 95 litres of water. Use a good quality test kit to monitor dissolved calcium levels in the aquarium. ReefCal™ should be used with a buffer like BufferPlus™...
    $29.90 Ex Tax: $26.00
  • Deltec Hy Carb Special 2.5kg
    Aqua Crown Hy Carb Special is used to enrich the calcium and magnesium concentration in seawater aquariums. It is intended to be used in Deltec Fluidised Bed Calcium Reactors.Application:Thus by using it in a Deltec Fluidised Bed Calcium Reactor the seawater aquarium is provided with calcium and mag..
    $27.90 Ex Tax: $24.26
  • Hanna Instruments Check Marine Calcium Colorimeter
    Calcium presence in water supplies results from passage over deposits of limestone, dolomite, gypsum and gypsiferous shale. Its concentration may extend from 0 to several hundred milligrams per liter,depending on its source and treatment. Calcium is necessary in plant and animal nutrition since it i..
    $109.90 Ex Tax: $95.57
  • Kent Marine Kalkwasser 225g
    KALKWASSER MIX provides bio-available calcium for lush growth of purple, pink and green calcareous algaes, snails, hard tube worms and clams. Corals will open more and stay attached to their skeletons better, with regular use. Phosphate & nitrate free! Contains no gluconates, EDTA, or other organics..
    $32.90 Ex Tax: $28.61
  • Kent Marine Kalkwasser 450g
    KALKWASSER MIX provides bio-available calcium for lush growth of purple, pink and green calcareous algaes, snails, hard tube worms and clams. Corals will open more and stay attached to their skeletons better, with regular use. Phosphate & nitrate free! Contains no gluconates, EDTA, or other organics..
    $39.90 Ex Tax: $34.70
  • Marinium Calcium Booster 1000g
    Replenish calcium.Helps maintain alkalinity.Promote calcification.Marinium Calcium Booster is a mixture that is used to significantly raise the level of calcium in reef aquariums. Calcium can be depleted rapidly in a reef system due to the lack of continuous exchange of seawater to supply additional..
    $26.90 Ex Tax: $23.39
  • Marinium Calcium Booster 2500g
    Replenish calcium.Helps maintain alkalinity.Promote calcification.Marinium Calcium Booster is a mixture that is used to significantly raise the level of calcium in reef aquariums. Calcium can be depleted rapidly in a reef system due to the lack of continuous exchange of seawater to supply additional..
    $39.90 Ex Tax: $34.70
  • Marinium Calcium Booster 4000g
    (Please note this product is in a bulk bag.)Replenish calcium.Helps maintain alkalinity.Promote calcification.Marinium Calcium Booster is a mixture that is used to significantly raise the level of calcium in reef aquariums. Calcium can be depleted rapidly in a reef system due to the lack of continuo..
    $59.90 Ex Tax: $52.09
  • Marinium Ionic Balance 2 x 265ml
    Increasing the level calcifying elements and alkalinity.Serves the function of a calcium reactor.Promote calcification of hard corals.Marinium Ionic Balance is a two part solution that is used to replenish calcium and alkalinity in reef aquariums. It is made up of Part A and Part B that are designed..
    $17.90 Ex Tax: $15.57
  • Marinium Liquid Argonate 265ml
    Increasing the amount of calcifying elements.Helps maintain alkalinity. Serves the function of calcium reactor.Marinium Aragonate is a saturated suspension of calcifying elements that serves the same purposes as a calcium reactor. It is designed to safeguard reef aquariums from dangerously low level..
    $9.90 Ex Tax: $8.61
  • Marinium Liquid Calcium 265ml
    Increasing the level of dissolved calcium in marine aquarium.Promote calcification of hard corals.Marinium Liquid Calcium is a concentrated solution of soluble calcium that will instantly raise the level of calcium in reef aquariums. Calcium can be depleted rapidly in a reef system due to the lack o..
    $9.90 Ex Tax: $8.61
  • Red Sea Reef Foundation A Supplement (Ca/Sr) 1000ml
    A successful coral reef aquarium depends on how well you maintain the water parameters which are the key to a stable coral environment. All of the elements found in natural seawater play a role in providing optimal water parameters, but some are more significant than others. These elements, the foun..
    $35.90 Ex Tax: $31.22
  • Red Sea Reef Foundation A Supplement (Ca/Sr) 1kg
    A successful coral reef aquarium depends on how well you maintain the water parameters which are the key to a stable coral environment. All of the elements found in natural seawater play a role in providing optimal water parameters, but some are more significant than others. These elements, the foun..
    $33.90 Ex Tax: $29.48
  • Red Sea Reef Foundation A Supplement (Ca/Sr) 500ml
    A successful coral reef aquarium depends on how well you maintain the water parameters which are the key to a stable coral environment. All of the elements found in natural seawater play a role in providing optimal water parameters, but some are more significant than others. These elements, the foun..
    $21.90 Ex Tax: $19.04
  • Red Sea Reef Foundation ABC+ 1kg
    Red Sea’s Reef Foundation ABC+ is a uniquely formulated powder supplement containing all of the elements of Foundation A, B & C, plus Red Sea’s Coral Colors A & B (potassium, boron, iodine & bromine) formulated in the exact ratio as found in the coral skeleton. Although there are slight differences ..
    $34.90 Ex Tax: $30.35
  • RowaKalk - Kalkwasser Powder 500ml
    Kalkwasser is a solution made by dissolving Calcium Hydroxide in water. The resultant fresh solution is alkaline with a pH of 12.4 and contains a ready supply of both Calcium ions and Carbonate ions.Both of these ions are useful to the aquarist as the Calcium ions are available to the corals and the..
    $29.90 Ex Tax: $26.00
  • Seachem Reef Advantage Calcium 250g
    Seachem Reef Advantage Calcium ™ is equivalent to dry Reef Complete™. It 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 deficient,..
    $21.90 Ex Tax: $19.04
  • Seachem Reef Advantage Calcium 500g
    Seachem Reef Advantage Calcium ™ is equivalent to dry Reef Complete™. It 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 deficient,..
    $34.90 Ex Tax: $30.35
  • Seachem Reef Fusion 1 500ml
    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 Fusion™ system will maintain calcium and alkalinity levels.Reef Fusion ..
    $18.90 Ex Tax: $16.43
  • Seachem Reef Fusion 2 500ml
    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 Fusion™ system will maintain calcium and alkalinity levels.Reef Fusion ..
    $18.90 Ex Tax: $16.43
  • Seachem Reef Kalkwasser - 500 Grams
    Seachem Reef Kalkwasser is a pure calcium hydroxide with unsurpassed purity and solubility characteristics. This calcium hydroxide meets or exceeds the purity of competing brands designated for reef use. Calcium hydroxide is used to prepare limewater (kalkwasser) solutions that are used in an automa..
    $45.90 Ex Tax: $39.91