FYI, I moved it to the sand on the off chance the lighting was irritating it, but I've attached a picture. This was a blue, turquoise and orange chalice, but what's left of it looks like basically nothing but a bit of green and red flesh.
Unfortunately, I also noticed today that my toadstool has a bit of goop floating around it (perhaps flesh) and one arm of my torch colony seems to also be retracted. I just changed out the carbon in case this is chemical related. I tested phosphates and they are at an undetectable level. I tested the saltwater that I added last night and nothing seems out of order. I haven't made much in changes with the exception of the following: I started the zeovit well over a month ago in an attempt to get the nitrates to an acceptable level and started feeding a bit less at the same time. I'm definitely not overdosing anything of the zeovit - I've read the manual several times now to be sure. It's hard to find a balance with my nitrates given that I have NPS corals, but I'm trying! I switched from Instant Ocean to Red Sea Coral Pro, but in total, I've only swapped out about 20% of the water over the past month in order to introduce the new salt slowly.
I'll dump the mixed saltwater I have been using (stored in my brute can next to my RODI system) in case it has somehow formed a bacteria, but I can't see how that would have happened?
I have a heater in my saltwater bucket to match the temp of my tank, so it's not temperature shock.
Does anyone have any ideas? I'm beginning to fear a tank crash of some sort.
To tell you a bit more about my system, it's 105 gallons total, 2 filter socks changed every 2-3 days, marine pure, refugium with fuge mud, chaeto and a healthy stock of copepods, and I run the icecap 120 skimmer. As for livestock, I have 2 wrasse (flasher and christmas), 4 damsels (3 talbot and one yellow fin), 1 bicolor blenny (he does pick at the corals from time to time, but he's a little guy and doesn't seem to do much damage), 1 purple firefish and 2 clowns. I also have one tuxedo urchin, 2 fire shrimp, 1 skunk cleaner shrimp and 2 peppermint shrimp. The shrimp have all been molting without issue (my skunk left me a shell just last night), and the urchin is healthy and happy, eating all my coralline and wearing his shell (and occasionally my mushrooms grrr!) camo.
My system is mostly lps/softie. I have a few NPS (spider sponge and sun coral) and a total of 4 SPS corals (I don't have powerful enough light for most SPS).
I have an ATO, I'm running the reefkeeper elite to monitor my system, and although I have 2-part and dosing pumps installed, I've never had to use them. My mag/calc/alk has remained stable - probably because I have very few SPS, so water changes give the system enough of what it needs.
The chalice and torch were near a very large elegance colony, but at a space of about 5 - 6", which I think should be enough to avoid a nasty sting (though it's a possibility, I suppose).
Anyway, that's about all I can tell you at this point - I'm rambling because I'm trying to think of what it could be at the same time.
Any help would be appreciated.
