Hi guys,I just want a small help , Currently I have a 120 gallon tank , dimensions 4x2x2.The problem i am facing is all the poops of the fishes are lying on the bottom(bare bottom).I have a wave maker whose flow rate is approx 1617 gallons/hr or 6000l/hr.The overflow of the tank is at 21inch from the bootom of tank.I have a 40 gallon sump too connected to the overflow for filtration.Now please tell me where should i place the wave maker at what height or at what side,so as all the poop gets towards the overflow pipe!!!