I have just installed a small stream and pondless waterfall system from Aquascape. I am extremely happy with the kit, except that the spillway doesn't flow a nice homogeneous wall of water out of the gap as I'd like it to. I installed it level from side to side and a slight forward tilt as the instructions indicated. When running the pump at its lowest setting (Aquasurge 2000-4000 gph pump), the water kind of dribbles over the middle but at both sides the flow is nice. If I take the pump up to its maximum, the sheet of water is perfect. The spillway doesn't appear to be bent up in the middle, but having it installed with black foam, I don't want to take it up anyone have any advise?