hey everyone. I had a heater failure the other night and the tank got down to about 71-72 . Woke up in the morning to everything very angry. Full bleach on all sps . Lps closed up and very angry. The night before i had performed a 20% water change while cleaning my refugium out. The salt had been in the ptfe tank with a heater and circulation for about 6 weeks? I cant imagine that a temp swing that far over the course of many hours would do that. I am thinking it could have been the salt. It seemed to have killed off a lot of stuff in the tank as the phosphate jumped up about 1.0 ppm as well. Now I’m freaked out about doing water changes with that container. It’s been about a week and the lps seem to have come back except for the zoas which are all still closed. Up. The fish are fine. There is no ammonia and never was. So the bio filter didn’t seem to be effected. I had some Dino’s starting to pop up but were gone the next morning . I am assuming whatever nuked them released the nutrients they were holding into the water column? Could be Dino toxins? I have since gotten the po4 back down to 30 ppb. And the nitrates holding steady at 10 ppm. Been running rox 8 at the recommended dosage changed every 7 days in case of the toxins. Opinions? Has anyone seen this from a very temporary temp swing ? I cant imagine the temp alone would do this ? Thanks.