A calcium reactor uses carbon dioxide and a chamber system to dissolve a premium calcium substrate into your tank. The calcium saturated result is then added to your system at an advanced rate for superior growth in your tank. Calcium Reactors are also the easiest way to maintain the alkalinity and calcium balance.

NOW AVAILABLE Spray Bar upgrade on CR-1 and CR-2 Reactors for just $45. Add the new Pan world 10 with the spray bar for the best external pump for the reactor!