Hello, I am new to air pumps. I have it all set up but my fish seem to be avoiding it and staying on the other side of the tank far more than usual. I suspect that the flow is too much (or maybe it's just too new and unusual for them). I have a control valve to reduce the flow but I am wondering how far I can reduce it without causing the pump unnecessary strain and how to tell when I'm reaching that point. Thanks in advance.