It's actually pretty decent. I figure I'm getting around 700gph total output from it. there is a slight climb for each output as it has to go over the lip of the tank, but that's maybe 3" above the water level. Split that flow 3 ways and I have almost 250gph coming from each of 3 outputs at a time. I'm still playing with the nozzle directions, but it does provide good random flow within the tank.