Originally Posted by renogaw
problem with just nassarius snails is that they rarely will clean algae from your rocks and your glass. (at least mine dont)
I believe nas snails are primarily scavengers. Mine come out the minute food hits the water, but stay in the sand the rest of the time.
My ceriths are constantly working on algae, and they hit the sand, the glass, and the rocks. They are great, but very very very very very slow.