I really think it depends on the puffers. I kept pea puffers for years. I had 6 in a 20 gallon long. Granted I had two males and four females in a HEAVILY planted tank so the aggression was spread out. I even had them spawn a few times for me- but at the time I was not prepared to rear fry.
These are great fish. By far my favorite when it comes to interaction. They will explore any new object you put in the tank and play with it like a toy.
Be careful with snails that are from outside sources - but sounds like you are raising them yourself. And deworm as soon as you get them. Unfortunately my puffers picked up a callamanus worm infection from some of the snails I fed them, and it’s a truly devastating parasite.
These are great fish. By far my favorite when it comes to interaction. They will explore any new object you put in the tank and play with it like a toy.
Be careful with snails that are from outside sources - but sounds like you are raising them yourself. And deworm as soon as you get them. Unfortunately my puffers picked up a callamanus worm infection from some of the snails I fed them, and it’s a truly devastating parasite.