My Trumpet Coral is Deflated all the way to it's Skeleton!

I've had the trumpet (2 heads) for about 5 days now and it was doing great until 2 days ago. The fleshy heads are shrunken all the way to the skeleton, or at least one of them are. The other inflate a little bit but then stops. I have fed them once since I've had them and they were doing great. My tank is 10gals, two 20watt compact flourescent bulbs and a hamilton blue LED accent strip for lighting. one 240gph powerhead. The trumpet isn't getting blasted with current, it's in a moderate flow area. All of my other coral are doing great! frogspawn, kenya tree, mushrooms, devils hand, zoanthids, aqnthelia and 2 feather dusters. Is there something I'm missing? The lighting maybe? at the LFS they were under T5's and I have compacts.
S.G, 1.024
ammonia 0ppm
nitrite 0ppm
nitrate 0-5ppm
pH 7.8 but stable
cal, I'm not sure because I don't have the test for it at the moment.

what could be wrong with my trumpet?

 

From my own experience...trumpets prefer low flow. They also tend to close up right before they're getting ready to purge (poop) Your light should be sufficient..I kept mine under 2x18w for almost 2yrs without issues. Give it a week or so to come around.

 

It is important to test for Alk.,Calcium, and Magnesium with lps.

 

They will do that periodically. As long as they are not showing the skeleton where the flesh is it should not be a problem.