Desperately need help with this problem. I got a new 150 gallon tank. It takes up the same area that a 90 gal would but is taller. It is plumbed with dual corner dorsu. The problem I'm having is that I can't get the sump level up. The water at the top of the tank is barely an inch below the trim and my sump has on 3-4" of water in it. Its not deep enough to run my protein skimmer. i have my return pump running on the lowest level and still have this problem. I've taken out the filter sock and filter sponge without improvement. dorsu pipes are completely underwater. Anyone have any suggestions? Thanks