I have a 110g Long with a 55g sump/fuge. I was Curious how good or bad my flow is. My tank is drilled calflow with 2 3in drains with 2 mag 7s returning. I have a hydor koralia 4 and a Tunze I believe the tunze is about the same size as the koralia but I doesnt say anywhere. Its mainly sps but also has a purple tang, blue Hippo tang, Rabbit fish and a few clowns. I have a couple Koralia 2 in the garage I was wondering if I should add one.