I'm thinking of what to add to my 30g tank. What I've got in it is listed in my sig. I was wondering about dwarf puffers because I want to control the snails in my tank. I don't know if they're to blame, but my crypts have giant holes appearing overnight. Sometimes I go in there and manually pull out about 40 snails. Is it better to use a puffer or constantly pull them out myself, assuming that it is the snails eating my crypts?