All right I have the sump running with some dead rock and live rock to get that part stable. I filled the sump with some water from the DT and new water. I ended up getting an ASM G3 skimmer, scored this thing for $30. Next is to move the frag tank (40b for now), I have CC substrate in there now and not sure if it does any good. Would you guys use substrate or go bare bottom, what are the benefits to each?