Please help! pearl anemone is dying after tank upgrade

[Ennvi]

Cross posted from the LPS section, sorry! I upgraded my tank from a 35g to 55g 3 days ago, I know corals will be angry, but this one specifically has started to peel away from the skeleton. can I save it? what's going on?

 

[OrionN]

I don’t know if there is a whole lot we can do to help. I am not sure why upgrade the tank will cause the corals to be angry unless you re rough on them or leave the rock and sand dry long enough for it to died off and have a recycle.
If you have a new tank that is recycling and have animals in it, then a lot of high volume water changes will improve the condition and soften the cycle.

If I am you that would be what I do. 75+% or more water change daily for a few times until die off stop.