Zoanthid bug potential

[Mayleyboo]

hello all please help if you can. I got Zoas like three weeks ago and that night found a nudibranch on it. I took him out immediately.
However now I have noticed that some are dying. And it’s depressing me. I don’t know why every level is fine and the other corals I got the same day are beautiful.
I see something that could be tiny with flea like bugs moving around almost jumping like fleas or it could be my eyes. I can’t figure out how to post pics or videos. But that’s what they remind me of if it’s not debris.
But they have these white spots on them too and it doesn’t look like anything google pulls up. Almost like a white head under the skin.
Some of them are gone altogether and some have like cocooned in white things and are see through and obviously dead.

 

[Mjrenz]

Bump

 

[Lovemyreef2015]

There are probably more nudibranchs. The flea like thing is probably a gammarid amphipod which are good guys. Also Google zoanthid eating nudibranch eggs.

 

[Jrhunter0000]

If you had one nudi you prolly still had eggs. Eggs are very hard to kill. inspect for more nudis and eggs.

 

[Capitol Reef Corals]

If you have zoa eating nudis you want to dip every zoa for every 2 or 3 days for probably close to a month to make sure they are gone.