Help with my zoo's pls

[ReefJunkie]

Hi,
I have had a bit of trouble with my frag tank lately, I inadvertantly introduced nudi's with a frag I purchased and have been dipping with fresh ro water quite a few times now. Also some zoo's look as if they are turning inside out here's some pics...




As in the last pic some frags are completely closed up and look to have white bits on them....nudi eggs? I do yet another fresh water dip when I see this to clean them off. And... not everything is looking so ill still some of my bigger frags are doing well.

Thanks for any suggestions and tips