Who Gives A Fish Forums

I was away for a few months, came home to do water changes, and that's when everything started going downhill. The new corals I added recently seem fine, but they haven't been in long enough to be affected by whatever's going on. I did switch to LED lights, and I reduced the flow in the tank.

I'm having a tough time with most of my LPS in the tank - the flesh is receding from the bottom up, and when it gets to the top of the skeleton, the coral just kinda melts away. I'm stumped. The corals that are having issues are my frogspawn, hammer, acans, dendros, and bflintix9tos.

My levels are ...