Calcium Reactor

[Jonny967]

Hi, i have wondered for a while now if i need a calcium reactor? I have not really got too many corals as a have been concentrations on anemones but have aquired over time a large leather coral, frogspawn coral, zoanathid and another i'm not sure what it is though.
I know that the calciul is to help corals build exo-skeletons so would this only be applicable to hard corals as regular water changes would be good enough for my current corals?

 

[SkiFletch]

Depends. Usually the decision to use something like a calcium reactor is reached when you've been testing, waterchanging, and dosing other suppliments for calc/alk and STILL failing to keep up with the demand of your corals. Usually this is only the case with a LOT of stony corals. A single frogspawn colony should not require a calcium reactor unless it's bigger than a basketball