Acans not looking so hot...

[Jaweeha]

Hey all, when I first got my acans they were all puffed up HUGE, now...not so much. They haven't fully inflated in about 2-3 months, and until now have shown no sign of tissue loss, so I wasn't really worried until now. And it's not that they looked good before, but now they are so closed that the pointier bits of the skeleton are poking through the skin, and the fleshy bits are practically flush to the skeleton. Here's some before and after pics...They are in the bottom left of this FTS, you can see they are very puffed up:

This pic is pretty old, they are even worse now, though as you can see all my LPS is still looking great:

The only change I have made is that I moved them to slightly higher light...though they are still about 30" under a 250w halide at 14000k. water is still very good (haven't seen a nitrate in a couple months). Should I move them back to lower light?

 

[RokleM]

The bottom pic actually looks fine. I assume they're on the left on the top one? They seem a little over inflated and appear to be in the middle of a feeding response.

If you can supply a more up to date picture, that might help.

 

[iriejp1]

Something might be nipping at them...

 

[ReeferBill]

Is your PH stable?

 

[Jaweeha]

My pH has always stayed stable at 8.2. I do have a coral beauty angel, but he's never been a problem, and if it was him wouldn't they be missing big chunks, not little bits? The only other thing I have in my tank that may nip could be Mithrax crabs, but they're still pretty small

One of the acans I moved up to the rocks, and BAM it's happy...should I try moving them all to the rock? I'll post pics when I get home later.

 

[Jaweeha]

This is the acan that magically got better, you could see the skeleton poking out in a few different places:

These two have just been getting worse and worse:

These two you can't really see that well, but they don't really have much (if any) skeleton showing, but literally no inflation of the polyps, and yes I got the pebble off the first one

 

[Jaweeha]

Anyone? they all look better except for the one on the left in this pic:

The skeleton is visible in lots of different places. What should I do?