Very impressive setup Los, I like the fact your circulating 1 of the tanks, and can divert from it while continuing running your system while mixing the next batch after draining old out, I am currently building a 190 gal tank, waiting on my sump from Life Reef , I have been back and forth on how to setup my mixing station, I have no basement, only route I can take is from my garage, I have the pump in figured out, still trying to come up with as close to a match to pump out of sump as I am pumping in, along with ease of controlling both from 1 place. Your setup is very nice, gives me ideas.