I recently set up a new tank with a UGJ system. The tank is a 140 gallon high tank. I put together a 2 zone jet system. Each zone has 6 jets. I hooked up my powerheads at 300gph each and i am woefully dissapointed. The tank took alot of planning and in my opinion it is just beautiful. I have 2 canister filters on it. An FX5 and a unimax plus700. Serious filtration. The FX5 uses the predrilled holes in the bottem of the tank for the intakes and the overflow as the return. The unimax uses the over the rim connections for intake and return. How big a power head do I need on each zone to move the poop to the intakes? I just ordered a RIO 900 gph to try out. They are not cheap so Iwant to try it out on one side before I invest in the other side. Any thoughts on this? I plan on posting pictures of my final setup soon. I realize not everyone will like it. Im sure that everyone will appreciate the work that it took. It"s my favorite tank so far. I love seeing all of the tanks posted on this site and I am happy to share mine with you. Thankyou all for all your input and support.