there's a poster named Orion here who's an anemone gifted jedi
and on a very standout work thread he made on the matter, guess how he regenerated his bleached anemones over and over? (he'd purposefully buy bleached ones from the store on the cheap, come home, do the trick, then re sell or have them shine in his reef quickly)
he takes one snip of a healthy anemone's tentacle and feeds it the the bleached one. not a joke, search him out. amazing.
good luck finding a snip donor but maybe you can among circles if you'll show them the post/search it out
its that zooxanthellae transfer working the magic, I don't even think speciation mattered much we'd need to re discover the post. its on here somewhere.
You can also buy zooxanthellae from phycopure. That might be easier.

