i have tried snails many times large and small with my 4rbp's. your only chance i believe is the small ones that come around when u have live plants. their so small that your p's wont notice them. some people dont like them but i think their cool, their so small and after a while u get a lot of them and i think they make a difference.can you keep snails and p's together? after my pleco died my tank seems to be getting dirty really fast and the p's take more sh*t's than my 1 year old son. so i'm wondering what kind of snails should i get to keep my tank clean?