I Suck at SPS. Help please. :(

[Enigma]

Oops. Missed water changes. Water changes of approximately 10% of the total system volume (55 gallons) are done once a week.

Edit: I should also add the my hammer coral is not happy. All of my other corals (LPS and softies) and doing as well as they were before, and most of them are doing very, very nicely. The last couple of weeks have just hammered my SPS. This system has never been great for them. It has been a real challenge to balance their needs and the needs of my LPS. My contest entry tank is being designed more as an SPS tank.

At this point, I don't have any concerns about either of my birdsnest corals dying. If I don't mess with them I'm sure they'll come around. I'm worried about my completely browned out monti cap (which is a lovely green with purple rim), but I hope it will pull though. I'm not optimistic about the condition of my valida (completely bleached) or convexa (bleached and STN?).