A Question about Snails

[regina filange]

Hi.
I was reading somewhere (but can't find where now) about how some snails are a pain in the butt in a reef tank becuz if they fall, they can't turn themselves back over.
I want to purchase some snails that are particularly good at getting algae off the glass, but dont want those type of snails.
What snails can you suggest that are great for getting algae off the glass but can turn themselves back over if they fall. What are the names of the types to stay away from?
How many would you suggest for a 12 gallon nano?
Thanks in advance!
~RG~

 

[npage]

Here's the catch 22.
Astraea are the best for cleaning glass.
They're also the worst at righting themselves if they turn over.

 

[regina filange]

What would be your next favorite for cleaning glass? Anyone?

 

[cranberry]

Trochus, nerites.

 

[cranberry]

Stay away from maragaritas.... they are a cold water snail but are frequently sold in warm water CUC packages. Stay away from bumblebees, they do nothing for your algae concerned but are a predatory whelk will snack on your sandbed fauna.