Well, actually all my other zoas ie purple space monsters, Caribbean ultras are ok with the higher all of 9dKh. It’s just the candy apple zoas, not sure why but it became umbrella shaped after the alk was slowly raised to around 9.I have a great Lfs and all they carry is Fritz RPM and I like to support them as much as possible. My alk runs at 9.8. My zoa garden doesn’t seem to be affected by alk. But to be honest this is the first time I’ve thought about it.