[artemis]

Two suggestions:

1. Put a piece of cucumber or zucchini on your tank bottom. Snails love this stuff. Pluck the piece up (along with all the snails clinging to it) in the morning before your tank's lights go on and the snails go back into hiding.

2. Add some snail-eating fish to your tank. Most people recommend various loaches. Unfortunately, there's an excellent chance that any snail-eating fish will decide to snack on your shrimps and your non-problematic olive snail as well. Of course, if you're willing to set up a small invert-only tank, you could move the olive snail and the shrimps to safer lodgings before turning the loaches loose on snail-assassination duty.

 

[artemis]

You're welcome! I hope you soon have the snail plague well under control.

 

[artemis]

The cucumber idea is an aquatic variation of the old gardener's trick of setting a plate of beer out in the garden to lure slugs to their doom. Give the little nasties something they enjoy, and trick them into a trap! It's a lot easier to pluck the snails out when they're all fastened onto a single piece of food rather than scattered randomly all over the tank.