I have a nine gallon, plastic bin or a hexagonal 5 gallon tank which I could use for the puffer, which do you think? What do I need to feed them? I could feed earthworms, dried shrimp and hopefully some baby apple snails(trying to breed them), if they don’t breed could I just feed the other two? What else do I need? A filter(I could probably make my own with aquarium tubing, a sponge, cotton balls and established sand), a bubbler? Is that it?