[CyberJester]

The best way to do it would be to drill the back wall of the tank and use fittings this would reduce the had pressure required to plum up over the top of the tank and down in this would also get rid of the unsightly PVC coming out of the tank.

The other thing that could be done is to use the return pipe (assuming tank plumbed for overflows). Then break that out just about the bottom the tank and distrubute with piping to where you want it to go. The only problem with this is you flow is reduce to the capacity of the overflow drain.