I've got the Eheim 2217 on my 55g. I have the spraybar installed on the end of the tank so the current can flow the length of the tank. Evidently what happens is the current flows across the tank, hits the far end, then turns downward and comes back across the bottom of tank in the opposite direction. All my stem plants are pretty much just bending completely over almost touching the substrate. How do you get around this problem?