you guys give some good info on this forum, so I have another question for you. IDEALLY how do you want the placement in a barebottom tank? Right now the suction is sitting right on the bottom of the tank in the middle. The outlet is near the top of the water at one end shooting straight across the tank. Seems the outlet causes more agitation on top and actually at the bottom too. I think the deeper it goes in the water the less current in the tank. I could be wrong. Wondering if anyone else ever researched this. Thanks.