In a reef tank, calcareous organisms like corals and clams along with calcareous algae, such as coralline algae, utilize the calcium dissolved in the water as one of the components to build their skeletons or shells. To keep a constant level in our reef tanks we need to supply calcium into the water column. One of the ways to accomplish this is the use of a calcium reactor.
A calcium reactor, in conjunction with a CO2 system, dissolves calcium-based filter media inside the reactor to replenish calcium and other minor elements in your aquarium water. For tanks with a high calcium demand, a calcium reactor is an invaluable tool that eliminates the need to dose 2-part calcium/alkalinity supplements.
Some hobbyists have the misconception that setting up a calcium reactor is difficult. In reality, nothing could be further from the truth. Sure, they might take a little time to setup. But you're a reef aquarium hobbyist—patience is clearly a virtue you already possess!
Read How to Setup a Calcium Reactor>, watch our videos (AquaMaxx CR-1 Calcium Reactor Setup Guide and Calcium Reactor Components) then set aside a few hours to get your own reactor up and running. If you have questions, contact us! We're here to help and tech support is always free.
The most popular brands of calcium reactor media we carry also happen to be among our personal favorites: CaribSea A.R.M. Aragonite, Two Little Fishies ReBorn Coarse Aragonite and D-D ROWAlith C+.