My plerogyra hasn't expanded today, just a cupla little dark bubbles. Some white stuff coming out too. Is this really bad? All my other corals are fine. I did recently add a frogspawn and a sarcophyton the week before. They, the trachyphyllia, the mushrooms and the green buttons are all ok. Oh yeah - wait - this morning the mushrooms (near the bubble) had white filaments (sweepers?) out that I hadn't seen before. Whats up? I have that sick feeling.