Feed your plate coral too if you are not already.

Awesome!! You can feed your trumpet corals and the plate coral too if you want. I find trumpets really do a lot better with feeding. Get bigger heads on them. You have to wait for the feeding tentacles to come out (try first thing in the morning before lights are on). You can also rub the coral a bit with some mysis, and then come back in 10 mins and it might have its tentacles out then. The plate you can feed anytime, but it's slow, and will get food stolen from it. I find strawberry baskets (those green ones) are really good for covering up corals while they eat if needed.

Any irritating fish.
 

Hey, my lemon peel used to harass my bubble. One side collapsed and began to semi rot. I remove the lemon peel angel and the bubble has mad a full recovery. When anemones or probably soft or fleshy corals are damaged, they can only repair themselves when you feed them. of course don't over feed. I've had my bubble fo 2 years. I have a ritteri anemone for over a year. If I feed my ritteri he grows fast. Big water changes keep the ritteri uncomfortable so it keeps his growth at bay.