nudibranch? good or bad?

[kevvin27]

I got a few frags yesterday and just found this little nudibranch? in my tank on some hair algea. Is it good or bad? Could this also be the culprit who ate part of my sponge?

 

[Bifferwine]

That looks like a typical zoa-eating nudi, although a lot of them look similar and that could be eating your sponge. If I were you, I'd take your zoas and give them all freshwater or iodine dips to remove any more nudis and egg sacs that may be on them.

 

[kevvin27]

how long should I dip them for?

 

[reeffreak]

It's a type of Aeolid nudibranch.

If you have zoas start freshwater dipping all of them.About 5-10 minutes in declorinated tapwater with the temperature and pH that matches the display tank.You may need to repeat the precedure every three days for another week or two.

 

[kevvin27]

Well that's crappy. Thank you though.