Trumpets give me fits too. I have a new tank ( 4months old and 120 gallon) so I've only added 3 acro frags. Two are now brown and one has remained green and purple (cross my fingers)
but the zoas are thriving, the acans and blastos are growing, the hammers and torches are growing, the plates seem to be ok. I'm having trouble with an eagles nest, but again might be because
of the new tank. I feed them reef roids and brs chili every few days. They suck that stuff up.
I have a year old biocube, forget acros with that crappy light. I cant even get monti caps to live more than a week or so, but mushrooms, zoas, kenya tree, hammers and torches, are doing well.
Once my wallet allows, I'll put some better lights on the biocube and stick and acro frag and monti caps in there.