How far below the top of the water should the rocks extend to? I've read you need to leave space for coral growth, but for the life of me I can't see how much vertical space.
Consider I have somewhere in the ballpark of MH 150W lighting.
majtek862
Nov 6 2009, 01:32 PM
I'd say at least 1/2 or 2/3rds up the water column. Not only will this leave room for corals but it looks pleasing to the eye.