Cockfield, i run mine in my sump, you can check out the last page of the woot NW odyssea skimmer thread. Basically add two layers of mesh on your NW pump you get and take the bulkhead you get and drill a hole in it large enough for a 1/4" air injector tube fitting piece you can get at lowe's. Then add the tube. It'll cost about a buck or two for the DIY parts. And make a world of difference as far as performance goes. As for hot running, i personally wouldn't use this as a hot because it will overflow on to your floor...........alot imo. If i were running mine that way, i would be a very very PO'd guy right now as its overflowed a ton.