I've been thinking of ways to try and save $$$ on electricity with my 80 gal. Besides the basic setup in a tank, I run 2 302 Powerheads and a 350 Mag canister. I wanna know If I can just completely take out the powerheads and just run the Mag 350 for filteration and water current. And for my 125 gal, im thinking about taking out the 802 Powerhead completely and just run 2 404 FluVals, with the supply of bubble wands for oxygen. Thanks!!