About to move my little koi into their new pond and figuring out what I want to do with my 46gal bowfront. Really think puffers would be cool and have a little 2.5 tank underneath it I could try breeding snails in to help keep them fed well. So should I just go with 5-10 Dwarf puffers or should I get a bigger variety? Running a Fluval 405 and another HOB filter. Have a nice piece of driftwood and lots of fake plants.