Hey guys, came here trying to get some insight also. I'm just starting out with hydroponics and am building a RDWC with 6-5gal buckets + a 5gal reservoir. I have 1" fittings/tubing and a 75gph submersible pump. Hydro shop owner guy on youtube said that's as much GPH as you should use so the buckets don't have different water levels. I'm just wondering how much water movement is recommended for an RDWC. I started my girls DWC and quickly realized the need for the R. Any thoughts? Thanks for the help.