I have a 75G tank and currently have no powerheads in it. In my wet/dry filter I have a 500 GPH pump giving movment to the surface of the water but that is all I have. I do have 10-15 powerheads that the guy that I bought the tank from gave me (none of them have ratings on them but there is all different sizes) Should I put a couple of them in and if so where should I put them? The return line from the wet/dry is on the back left of the tank (comming out of the overflow)
thanks
Ray
thanks
Ray