Hello, I've had two sets of mushrooms in my tank for a while now. well i have one that has been there well over a year, and started spreading like crazy, and another that is about two months old. Both mushrooms were doing great, but all the sudden two days ago they just started shrinking and dying out! is there anything i can do to check in my tank to save them? or anything that might be killing them? the one mushroom is a "hairy" mushroom i think and the other is just a normal purple mushroom. but they are really looking sad and i dont want to lose them, any help would be great, thanks.