Alright, so I'm looking forward to set up a low-tech planted tank with low-lighting, no CO2 and no fertilizers for dwarf puffers. I've done some research already and I know what puffers eat. My question is about keeping shrimp or snails with dwarf puffers. Are there any snail or shrimp species that could sustain themselves with 2-4 puffers in a 20 gallon tank? I want my puffers' diet consist of mainly bloodworm, snails and shrimps, although I don't know if the puffers would massacre the snails/shrimp population or in the worse case, reproduce like crazy (a lot of snails are capable of doing so) leaving the tank overstocked. Has anyone here ever kept dwarf puffers with shrimp or snails? If so what species can I feed my puffers with, that are able to reproduce fast enough to sustain their population and not reproduce too fast to not make my tank overstocked?