I keep a lps dominant tank and had 3 Acantho, and all of them developed issues after 3-6 months. They don’t like even moderate light, and my orange one bleached ln my sandbed in 100 par. I feed regularly and they receded. I just lost a 24k gold acantho - it’s mouth area bleached, then the mantle bleached, then it started eroding. While this was happening I tried all the LPS tricks and supplements. Nothing helped.
My remaining two are fighting for survival.
Everything else in the tank is fine. These were all fine for several months then declined rapidly
See my tank, everything happy but the acanthophyllia and I can’t figure it out.
Orange one bleached in 100 par on the sandbed, I have reduced lighting further to help. It’s probably 75 par now. The dots on the center are food pellets. I have tried all sorts of food and this was pellet day
My green one bleached its mouth area just like the 24k did, and is also severely receding. This one is probably in 75 par and is shaded.
Do you mean acan’s that are roughly 1” polyps?
Or acanthophyllia that’s 6-8” single polyp?
These are expensive coral and I don’t think I would try another. Scolymia and Cynarina are similar and doing great, the acantho’s are more sensitive but I’m not sure what is causing this