Is this killing my sps?
 

Hey guys

So recently my tank was been Rly thriving for the first time ever in this hobby but then i notice my monticals STN and there was a bunch of this weird white things on it but I didn't Rly care much Cuz they just fast growing caps. Then I notice my German blue digi frags in my sump was STNing and there was these white bugs looking things around them as well. They seem to only be on dead tissue.

Heres are a few pics of it.
http://i1292.photobucket.com/albums/...psmca9w5ah.jpg

http://i1292.photobucket.com/albums/...pskpzg8wef.jpg

http://i1292.photobucket.com/albums/...psgkmngql0.jpg

Any1 able to ID them and tips on how to get rid of them? I tried to revive dip the affected digis but they don't seem to fall off of the frags so I just chopped the frags up n remounted

Montipora eating nudibranch, one of the most annoying pest in the hobby, sorry bud.

From what I know, most people end up making frags of their monti's, and QTing them for a couple months, leaving the display free of any montipora so the nudi's can starve. They generally target caps first, but can even move on to digi, and setosa as well. In the QT, I think you should be dipping the frags once a week/inspect to make sure there's no eggs/nudi's on them.

If you see a couple, that means they've been laying eggs, and dips will only knock off/stun the adults, but the eggs are the important part.

Good luck!

F.H. is right, those buggers are terrible. If you can easily replace these Montis (the ones you mention are common), I'd pull them all out of your tank and throw them in the garbage. You probably have them growing on the rocks, and those bits you probably can't remove. Once the Montis eat all the remaining bits, then start your countdown - a couple months without Montis should be fine. Their life cycle is less than 2 weeks, so if you wait 3-4 life cycles you should be plenty in the clear. :)

What are the chances of a wrasse decimating them

Damn I was fearing it was gonna be nudis. Luckily I don't have many montis n y digis r almost all dead now. I did see them on my Valida a few weeks ago but it did no damage at all and I don't Rly see them on it no more. Do they target acros?

Slim, they'll generally keep them in check but won't usually get rid of them

Nope

Ive had good luck getting rid of monti , and zoa eating nudis with a yellow corris wrasse and a turkey baster to blow nudis out of the cracks and crevices of the corals . There like candy to them .

I guess I can just wait a month for them to die before I get more montis. No rush.