Sea slugs. Yay or nay?
 

About a month ago, I noticed a slug with a pearl pink shell feeding on some algae. Now, I have a half dozen, in various sizes, an am wondering if they self control or get to the point that they become a pest. Advice or suggestions?

It's probably a stomatella snail, they are prolific breeders but are good algae eaters. I have hundreds. They are also good wrasse food lol

That's exactly it. Thanks Subman! I'll let the little buggers procreate freely.