Scoly help!

[midibless]

I have three scolies, all beautiful and well loved by me, and all very healthy.
Recently I brought home a diamond goby who is doing lovely things for my sand bed, but his habit of creating hills for himself to be king of has sent a lot of sand falling onto my scolies.
My warpaint has taken a huge nose dive in just two days time, likely from sand continuously ending up on him. I always gently use a stream of water from a turkey baster to sort of blow the sand off of him without having to handle him. I've never seen any of my livestock pick at him and the decline was very sudden.

Any advice on saving this dude?
These pictures were taken two days apart. The degradation was extremely quick.
Water parems are good, my scolies all do great. Only new tank addition is a lawnmower blenny.

 

[steallife904]

is it possible you had a swing in parameters? Did nitrate or phosphate change rapidly?

Could very well be stressed from sand on it all the time but I don't think it would recced like that. Would almost expect the sand to make a hole in it where the sand lands.

 

[midibless]

is it possible you had a swing in parameters? Did nitrate or phosphate change rapidly?

Could very well be stressed from sand on it all the time but I don't think it would recced like that. Would almost expect the sand to make a hole in it where the sand lands.

Nothing that I have immediately noticed, but since I work most days at the LFS while I learn this hobby I was able to take it and my UFO whose mouth was also looking a bit bleached and gaping in. Rather the brief stress of travel to a frag tank with no sand than to let it continue to be agitated while it sits in my tank and I fuss around trying to figure out what caused the sudden decline.