Reef tanks with a high number of stony corals will have higher calcium demands than tanks filled with no corals or predominantly soft corals. Like many aspects of this hobby, there are many ways to keep up with their requirements. Let’s look at three ways to maintain calcium and go over the pros and cons of each – Kalkwasser, 2-Part, and Calcium Reactors.

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Calcium Supplementation 3 Ways – Kalkwasser, 2-Part, and Calcium Reactors