Ok, After seeing a betta i ahve falling in love with i am considering buying.
But i have no space- Can i sperate a 6Gal Betta Tank (Aqua40) Temporary Untill i set him up a little shack?
yep, should be fine
3 gallons each should be okay for them, just make sure the divider isnt completly see-through as it will stress them seeing eachother so much