I think you have dwarf puffer, right? I don't think their teeth grow. I've read this on other sites, but its always debateable since everyone have different experience. I tried to be conservative and feed snails; however, my DP only go for the snail meat anyways and never bite at the shell, no matter how small the snail may be.
In the past, I bred my own snail, I have to make space for another tank (or salad bowl in my case) and change out the water every week and feed every day. It just seems like its more work and space. 1 pieces of frozen raw shrimp (or other crustacean seafood at the grocery store) can be sliced up into pieces and it will last 1 week. Thats pretty cheap to me. I even thaw it in FW vitamin water (Vita-chem) to add in vitamins into the diet. It just seems more simple/easier to do this. Although the shrimp is packed full of nutrients, I use Vita-chem as cheap insurance for a long healthy life (one bottle last a very very long time, so I hope to use the whole bottle before it expires! lol).
