BlueFish721;2466434; said:they loose alot of gph with head. I bought a 4000 (1000gph) and when i put it on my tank, i got about 750gph out of it. i was very dissapointed
that is your fault for not doing research, I got the Q1 4000 knowing that I would see around 700 gph on my 220...
I havent had a problem with my pump and it is very quite.