I've got a hammer, candy cane, favia, chalice, and 2 SPS at the top that do well with the stock lighting. The chalice has more than doubled in size in the last 3-4 months. The SPS is not colorful, but it was not colorful when I got it a month ago, but it has good polyp extension and is showing growth. I keep my salinity at 35, or 1.026SG. I use LFS salt water and add reef crystals to bring up the salinity. I also have a bit more flow in there. I would start by increasing your SG slowly and make sure your parameters are in check. Adding another power head would not be a bad idea either. Good luck. I know its frustrating when things don't go our way. We feel somewhat responsible, actually, we usually are responsible. Hope that helps....