I have some red mushrooms that used to open up nice.That was before I combined my 2 tanks together.I had a fish only tank and a reef tank .The fish tank was 150 gl the reef 80 gl.At one time I had copper in fishtank Thats when the greif started.I did a copper test came back zero . so first I put a snail in first over nite it was ok so then i did the switch. featherduster looked burned curled tips.started to run poly filters .they turned blue about 4 of them. i now keep a poly in the sump and canesters fluvul.I lost a snail and a large blue clam so far .did lots of water changes as well . But before the switch to the 150 I had problem w/ large elephant ear mushrooms. they would be big and open at the pet store but get them home let them settle in for a couple of months and they never open.
150 gal. reef ,with small community fish ,80 gal.fw tank with ciclids and 35 gal. hospital tank with 1 sea horse