Why are green BTAs harder to keep than others

[James M]

Me and other reefers have struggled to keep green BTAs alive but when it comes to roses, rainbows, and other ones there seems to be no problem.
What gives ?
I currently have 2 greens who don’t look good but my rainbows are thriving

 

[SupraSaltyReefer]

Are they mixed together in the same tank? I've noticed not all, but most green anemones never thrives mixed together with red anemones due to chemical warfare. They usually bleach or turn gray and melt away. Running lots of carbon helps.

 

[James M]

Are they mixed together in the same tank? I've noticed not all, but most green anemones never thrives mixed together with red anemones due to chemical warfare. They usually bleach or turn gray and melt away. Running lots of carbon helps.

Yes they are. Totally forgot about chemical warfare