Yeah, the reason I mentioned it is because I can almost completely say that was the sole reason that I could keep sps. I killed a few frags here and there before that, trying to get down to a root cause, and after posting here, Brian led me down the path of the swing inbetween light cycles. I did keep a light over my sump which worked until I got the sand. Once I got the sand, I put it in and turned the light off. No dead corals.

I too have read all about that debate, and I think the reason that people have success in BB tanks is due to the fact that they do incoporate a fuge in there somewhere that is lit either opposite the light cycle, or they run 24/7. That has been my perception of that whole ordeal.

They do also help with Natural Nitrate Reduction. I am on the internet way too much. Then again, so is Ray, lol.