Hey Greg, Or should I say Coral Master.
I've been tweaking my flow quite a bit as of late. But I've actually been trying to 'soften' the flow around the tank.
I have 3 returns being fed from a Sequence hammerhead pump.
I have 2 of the returns on wavy Seas and 1 on normal lock line. I find the one on lock line does not blow directly on coral but across on a diagonal the entire length of the tank. I wavy seas actually blow on coral, but none that are having problems. I have introduced ball valves to the wavy seas to ensure they are not blowing too much water directly on the corals.
Just for more info. the entire force of the Hammerhead is not being returned through the 3 return lines. I have it also going to my Chiller and my 30G frag tank. I would say 4600gph is returning to the tank
J