Small White Snails

[xcorallusx]

I noticed some small white snails on the rocks and glass once the lights went off. Are they good or bad?

 

[Mmckibben]

are they long and really small? If so, i have the same thing. I have no idea if they are good or bad.

 

[xcorallusx]

I think they are these COLLONISTA SNAILS. I found a picture on this site http://www.xtalworld.com/Aquarium/hitchfaq.htm

 

[Mmckibben]

i have three types of snails in my aquarium, but these guys don't stay on any of them, just the rocks.