I have a 72x30x25 tank. I’m running 3 MP40s but I can’t get the flow I want. Originally I was running two in sync in one side and one on the opposite side in antisync. I wasn’t happy with that so I now have 1 on each side running 90% reefcrest antisync. The 3rd pump is on the back wall halfway across and halfway down. I had it set as a child on the back wall setting but that setting appears to just put the pump in the lowest setting at a constant flow. What would be good settings for an sps dominant mixed reef?