growing frags in sump?

[mark]

Was considering moving the macro from my 20g fuge to the sump and turning the fuge into a frag tank. Because of the size of the reflector for the 175W SE I'm considering, thinking just leave the macro fuge as is, and place the frags in the sump. Advantage is I'll have more room to mount the reflector.

What's the negative to having SPS frags growing in the sump?

2" feed across center of 20G


Open area in 75g sump