He basically had loads of huge tubs all connected. Flow is a gyre type flow (but not using the gyre pumps) lights he had different on different tanks, but on the main sps gems he had diy led putting out 800 par on the frags during "white light" hours (6 hours per day), if I remember correctly, he ran high calcium like 480, alk around 8.5-9, mag I think like 1400. Po4 0.03 and no3 I think he said around 10. Very different numbers to what I run but it sure was working. They are a coral farm that sell online at coral auctions and are not a store really open to the public but we had a contact that helped us get to see his system.