I have had my 90g reef set up for 12 years. The corals that I'm concerned about have been in my tank for about a year or so. I started to notice the changes on these corals a couple of days ago. The bowerbanki has white areas and lighter areas. The micromussas look deflated and the feeder tentacles aren't out like they usually are. No new corals or fish have been added in the past month. I have added some peppermint shrimp, an emerald crab, and more blue legs. Calcium is at 410, alkalinity is 5meq/l, pH 8.1
Thanks!
Thanks!