Calcium (Ca) - An Essential Reef Tank Element
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Adding Limewater To Reef Tanks
An essential reef additive, learn all about what limewater or kalkwasser is, how to mix or prepare this calcium solution, how much and how to add it to reef tanks.
Top Calcium Supplements
Calcium is necessary for the growth of hard corals, soft corals, and other reef invertebrates such as tube worms, snails and clams, as well as purple, pink and green coralline algae. As calcium is depleted in reef aquariums, supplements can be used to replenish the calcium levels.
Knop Calcium Reactor Product Review
From your About Guides, Don Carner gives a product review on the Knop Calcium Reactor, a product that he himself used for many years and gives a 10 rating on!
Aquarium Chemistry - Calcium
From the AMDA Handouts page, John H. Tullock explains the importance and benefits of the addition of calcium to reef aquaria and instructs the hobbyist on how to prepare and administer limewater solutions.
From the Thiel Tech Library, an excellent article on understanding the fluctuation of calcium levels in your reef tank and what to do about them.
Calcium Measurements Explained
From the FINS Reefkeeper's FAQs, information about how calcium content (aka carbonate hardness) is measured either in ppm (parts per million) as calicum ion (Ca++) or ppm equivalent calicum carbonate (CaCO3), the relationship bewteen them, and what the acceptable calicum range should be for reef tanks.
Calcium For Dummies
From the Aquaria Central Marine Articles Archive, Mike Andrews wrote this article with the intent of helping other hobbyist to learn what he's learned regarding calcium additions in the simplist way possible.
Calculating How Much Calcium To Add
From Albert Thiel, a question from one of his Reefkeeping mailing list subscribers with helpful information given by Craig Bingman.
Kalkwasser and Pure Calcium
From the Thiel Tech Library, information on determining how much KW to add to your tank.