Integrating a calcium reactor into your reef tank setup can significantly enhance calcium and alkalinity levels, promoting healthy coral growth. To achieve optimal results, its essential to coordinate the reactor with other reef tank equipment such as skimmers, reactors, and dosing systems.
Shop calcium reactors for saltwater reef aquariums. Maintain stable calcium and alkalinity levels with efficient reactors that use CO2 and aragonite media for reliable calcium and alkalinity supplementation and reduced manual dosing.

calcium reactor for reef tank setups is a powerful tool that can transform your aquariums inhabitants and your overall reef-keeping experience. By providing stable calcium and alkalinity levels, youre creating the ideal conditions for corals to thrive, grow, and display their most vibrant colors.

Contrary to its name, a calcium reactor functions primarily as an alkalinity pump rather than a calcium pump [1]. Reef tanks typically consume alkalinity faster than calcium, and the reactors output is weighted toward carbonate/bicarbonate replenishment. This makes it an elegant, low-maintenance solution for heavily stocked reef aquaria.
How to set up a Calcium Reactor A calcium reactor is a piece of equipment that helps maintain alkalinity and calcium in a reef tank. For years, I didn't buy one mainly because they are expensive, and dosed my tank with B-Ionic daily.
Setting up a calcium reactor can significantly benefit a reef aquarium by maintaining stable calcium, alkalinity, and magnesium levels for coral growth. Here's a step-by-step guide to setting up a calcium reactor: