bacterial infection anemone

I have an RBTA that I’ve had for about 4 months now. After upgrading tanks(30g cube up to a 75g) it split (stress?) and has been hiding in a cave for about a month. I used the same rock, sand and filter/media for my larger tank. I recently turned my light down from peaking at 40% white 100%...

ok so i may have evidence of my anemone having a bacterial infection it’s not opening up as much as it used to and it’s really dimmed in color so i’m wondering dose it have to be treated or should i leave it be and see if it recovers on it’s own or should i feed it something and here’s some...