Anything I can do about these snails...?

[mogurnda]

The pH method sounds way too risky. Clown loaches have always worked for me. They leave a few, but it can never get to outbreak proportions.
I also agree that reducing the food supply will help. Reduce feeding and vacuum a bit.

 

[RTR]

From my experience in person and on the boards, ~2/3 of the snail excess problems are directly overfeeding (or inappropriate food used- gives the same net result) , ~1/3 are combo of the right algae and insufficent water changes to get rid of excess nutrients.