hello, this is my 2nd (hit the big time huh...) post on this forum. i posted the same thing in the freshwater forum and will post here as well. i am trying to figure out what options i have on filtration. my wife would like for us to eventually go saltwater with the setup. the folks on the freshwater side said that it would not be able to be drilled for an overflow. the guy at the lfs told me that i would need that should i decide to try for a reef setup. i plan on doing some sort of background out of plexiglass and rock and was wondering if i could put a submersible pump in the bottom to pump water out and try to replicate the action of an overflow. any advice is greatly appreciated. tyson