I am setting up a 90 gallon with a 20 gallon sump. I have beananimal overflow but instead of the 3 1.5 I have 3 1.25 pipes due to size of holes drilled. I can only turn one of the three down. if I turn two it sucks all water out of overflow. second problem I am getting bubbles in the main tank. I do not have baffles in the sump. the return pump is a snapper. will installing baffles help? will submit pics later