I have a rock of cheap brown mushroom that have been with me for almost 2 years, started to melt early last week and was all gone after I come back from my oversea holiday. rest of the coral more or less ok.
Wonder what will cause mushroom to stress up and melt away...... This rock of mushroom has been hardy and gone through all the "hardship" while I learn to improve my tank. Just don't understand why they died when I thought my tank has more or less "mature".