snails?

Hi all, I added some live rock to my tank. It was the most algae covered
rock at the LFS and it was in the "rubble" tank. It had been donated to them
by someone who dismantled their tank prior to a move.

Now a few months later, I am having a snail problem. I remove about a
hundred tiny little snails a week, but can't seem to get them under control.
I don't suppose there is a fish that would eat these guys but would leave my
"regular" snails alone?

Any advice on getting them under control?

They look a little like mexican turbo snails if I let them get big enough,
but they are a mottled brown color.

Thanks....