I am in the process of upgrading my 75 sps reef and currently have a mak4 pushing water from a basement sump. I was planning on most of my circulation by a set of tunze 6025 mods, but recently began looking into using Flow accelerators on a 3/4 SCWD. I figure I have about 600 gph from the pump as it is throttled back to make the sound of the overflow a little more tolerable. Anyone done this? If it increases the flow by 2X or more that would be 1200 gph +. Would this be enough flow for sps and a shallow sand bed?