FWIW 3/*" Poly For air, Solution and weep all T'd above the Bay. 2 Flo Jets each supplying a 4 bay manifold. While doubtful all 8 would use FB at one time I still figured I would use 2 flo jets. All other low PSI functions use one Flo Jet for 8 Bays. No Foamers, no needle valves...