Thanks for your comment. I know some people will forever dislike snails. In order to control those populations you're struggling with, definitely assess how much you're feeding. I can help you with that if you like. After all, they're only thriving because you're providing them the tools to thrive
Raymond, I'd advise against ever adding a creature which is only serving as an end to a means. For what do you do with the loach when he runs out of snails?