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- Ultimate Aquacare
Calcium is a major constituent in your marine aquarium with recommended concentrations around 410-450ppm. These levels must be maintained to help with the function of fish, coral and many other wanted inhabitants. To keep inhabitants healthy a pH of around 8.1-8.5 is recommended. When there are available carbonates present, the Calcium ions react with them to form Calcium carbonate, this is then taken up by corals, snails, crabs to help build and repair their skeletal structures. When wanting to increase both Calcium and pH a Calcium hydroxide-based supplement such as Kalkwasser is recommended.