Next year I'm looking to go to 100-150 taps. I only have 5-6 hours a day that I can boil unfortunately. My 2x4 evaporator will boil 8-10gph. I'd like to figure out what size ro to build that would put out 8ish% concentrate at around the same rate as the evaporator can boil off. I know a 4x40 would easily do it but I think i would be lacking permeate to flush a membrane of that size. I currently have a 2x400 gpd ro with an aquatech. I do have 4 400gpd membranes and housings but only run two at a time as the pump really can't feed 4 of them imo. Suggestions?