Dwarf Puffer or Anything else?

i don't think you should get the fluval edge. it's a rip off and it's so small. i don't think a 6 gal is big enough. they're very territorial and you won't be able to keep any fish with that puffer in a 6 gal. you should get like a 10 gal and give it a lot of hiding spots. i think with that, you could prolly fit around 2-3 dwarf puffers. nothing else though.