I got a snail overpopulation problem. Bought one Chromobotia macracanthus to help me out but he prefers to hide behind the filter and if he does eat any snails it's obviously not enough. I've got some guppies and mollies that breed in this tank (and I'd like to keep it that way). Any tips on how to get rid of the snails (or at least get them under control)? they devour pretty much all my plants including not so palatable anubias.