I have a 40g long, bare bottom, frag tank
30g sump/refugium
1/2 of the frag tank is all live rock, piled to the top.
other 1/2 of frag tank is my frags with egg crate 3" off the bottom
Lights over the frag section is 175 MH
Lights over LR is PC.
There are plenty of snails and a few red and blue...