Not a silly question!!! Yes I have , but Even from when I first set the tank up I was just not happy with the flow and I’d really like to get rid of one of the wave makers, with a screen top there’s a small gap, luckily no jumpers (gosh hope I didn’t jinx myself ) . Thanks so much for respondingThis may seem like a silly question, but youd be surprised... Have you cleaned it yet? How often?