Ok I finally got my frag tank plummed, and some water is running in it.
Here's the problem: I have a mag 7 (that I got as a steal) returning my water from the sump to the frag tank.
It's going great but the water is filling to the top of the whole that's drilled on the back (and I'm worried it may overflow (literally).
1. Should I tee the return tube and send some of it to the sump so there is less flow back up to the frag tank.
2. Should I put a ball valve (I think that's what it's called) on the return so I can slow down the return?