I've got a 90 gal with approx 80 lbs rock (I add more as I can ... would like about 25-30 more lbs). I don't have the right lighting for corals yet, so I'm trying to focus on stable, healthy parameters and coralline. When I go to the LFS there are more supplements than I can shake a stick at … so which ones do I need to keep healthy rock? I've gone through two bottles of purple-up (that worked great), I am most of the way through my jugs of B-ionic solution and I've also got a bottle of Calcium. The hard, purple stuff seems to be growing, however, tends to flake off here and there once in a while. Am I missing something (other than lighting)?



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. I've got MG, but don't have a test kit for it so I don't use it very much.
