In message .com,
dfreas writes
Why not get a female betta to add to the tank? It will make the whole
system more interesting and you'll get to see more natural betta
behavior plus it will double your nitrate output. You win all around
that way.

Don't male/female bettas only come together for mating and then go their
own separate ways? I'd understood that having a pair together in a small
tank was a recipe for disaster...
--
sophie