Sorry for the late reply, been busy with school. I do think I have a rough idea. I had a small heat wave were I live at the start of the summer, I wasn't prepared for it but the temperature predictions were high 80s, and the room the tank was in tends to stay cool, even on hot days like that it would ever really reach 75ish. Well the temperature got up to 95 causing the room to get into the 80s. When I came home from work I noticed the corals looked mad but alive, and looked promising enough that they would survive, though I did notice my large green fuzzy shroom was very shrunken up and in bad shape. The next day when I checked on the tank I saw no fuzzy shroom and most of my corals in worse shape, the sps were starting to bleach and zoas/lps were closed up. I think the fuzzy shroom released something into the tank when it melted that nuked the tank.