drilled tank

Looking at purchasing this tank. The back is drilled for 2 returns in the corners and 2 drains in the middle. Any advice on how the two drains work? They look so high up on the tank. I am coming from the planted freshwater world and canister filters. Im used to the filters picking up some of the...

Well I drilled my return line too low. We did the math and my sump could handle it but to make sure it could I had to get creative. Its a 90 degree street into a split Y. This raised the water level up just enough so that the first ball of the flex is just slightly above the bottom of the...