Hey guys and gals I was just wondering what sort of flow I should be running through a closed loop system? What will be best for stony corals and not be detrimental to softies, fish, and inverts? If the advice could be given in Gallons per hour or turnover rate for a 180 gallon tank it would be appreciated. Also any brands of pump to AVOID would be great. I was looking at Sequence brand pumps I think they are good. Can pump returns be reduced or split into several returns?\n \nIf this doesnt belong in this board please move accordingly, wasnt sure if it belonged here or in the Lighting, Filtration and Equiptment board. It kinda fits both.