Well, right now only corals i have in my tank are polyps, mushrooms, and a head of xenia. Im planning on a peice of frogspawn in the tank, but have just 1 question on it. My LFS store keeper told me that i dont need to check calc, mag, and the other one for softies. And my corals seem to be doing excellent! Now i was wondering if Frogspawn applies to this?