This mushroom rock with four green mushrooms on it, is my first attempt at keeping coral.
Here is my set up:
55 gallon tank, Bare bottom
2 H.O.Bs, rated for up to 90 gal and 75 gal
1 canister filter, rated for up to 100 gal
1 phosphate reactor, rated for up to 150 gal
1 protein skimmer...