Yea I dont know what is wrong but I dont think im getting what I should be getting. I cant seem to get this sump to work right either. This weekend im going to be working on getting rid of all the darn micro bubbles out of the tank. Plus I cant open the pump all the way up cause the overflows arent keeping up, I dont know why though, I have to CPR overflows rated at 1600 gph. So im just confused. Im gonna just put 2 big power heads in there to take care of the flow problem.