It is working good for me. I am about to go sps, but I think I am going to go with mostly the lower light sps's and a squamosa clam. I am adding another 32 watts over it before christmas. My present from my girlfriend. I will probably not put many acros in there. I might try one just to see how it does. My refugium is doing grea. When I put it on I had .05 nitrate now it is undetectable, and I can look on the outside of the refugium and all you can see is pods. I like it. You can see pods sometimes fly in from the outlet tube. Good Luck. Just be careful on the backflow incase a power outage.