My bubble corral has been deflating for about 2 weeks. It's been in the reef tank for 9 months and always been fine. The zoos look a bit off too. All the other coral, (Torch leather, mushrooms, whip. bush,frogspawn, etc) looks fine. Do they go through some kind of cycle? I am usto it deflating and changing at night, but this is much more significant, and sometimes all day. The zoos seem to be shrinking too. I check the water regularly. PH 8.1-8.3, KH up a bit, between 200 and 250. Calcuim fine, temp fine, salinity fine, phosphates none, nitrate unreadable. Feeding liquid food, frozen food, and cyclopese, and have good light. Any ideas out there.
