I have several mushroom colonys and only my four rhodactis mushrooms are pouting. It started about when the weather started getting colder. Temp is 79. All my other coral is fine. I have other kinds of mushrooms that are awesome and zenia and duncans and brains and all are fine. T-5 lighting, 46 gallons. Water tests great. I have done water changes and nothing will bring these out of it. They are not melting just pouting and will not open. For months they got 3 to 4 inches around and awesome. Then one day wont open and just the rhodactis variety. Thanks