I also put a 1/2" loc-line valve on my return from the bottom sump to increase the back pressure to force more water to the reactors. I haven't been able to utilize it much as I am not home to put the new Ti hose clamps on and I don't dare increase the back pressure while it's only zip ties holding it together
Tank is looking ok. I am have a cyan issue in the sand and on the lower rocks. Corals are doing great though! I am going to up my water changes and maybe refresh my GFO and debating adding more bio-pellets now but I will take it one step at a time.