I do! I have colonies of mushroom corals because of the person that we bought it from had tons on the rock, and I didn’t really want to let it go at the time, they’re everywhere now, also I have a toadstool but it’s so small I doubt it’s been doing anything to the tankHey just a shot in the dark, but do you have soft corals in the tank as well? My personal experience with them if they get too big or rub up against each other is that the “toxins” that they emit really make it difficult to impossible for sps to grow and flourish. Soft coral toxins that are produced by corals fighting for space are unseen and can’t be tested for. I learned that lesson years ago and my sps corals took off.