Long term issue with Zoas only opening halfway

[Thewatchmangoby]

I’ve had the same problems with my zoas. Talked to my LFS and his zoas were imported from Southeast Asia and he told me that the SG from the ocean there has a lower salinity than 1.025. His zoas are always opened up and his salinity in the store is always in the 1.021-1.022 range. I get all my zoas from him. My salinity was usually in the 1.025 and zoas do good for a couple of weeks then start to melt away. He advised me to lower salinity and I did that about 6 weeks ago and it did stop the zoas from melting. Now they are opened and so far so good. That is the only change I did on the tank. So far the rest of the other corals are okay. Anyone have thoughts on this?

not OP. But similiar issues. Right now im gonna blackout the tank for 3 days to rule out lighting. And next ill try lower my salinity and let you know in the next few weeks if it worked.