the four split I am using, you can take out a filter and use it for four bettas, or in the last tribical or cubical or w/e you can pop in a little filter and it filters the water in that one and leaves a small water movement in the other tribicals or cubicals or w/e its pretty neat.
Seriously, dont listen to rumblesushi, you are totally right. I have a client from Malaysia who remembers catching bettas with her hands from tiny, muddy pools as a kid. They can live in almost any environment, and not only live, but thrive. I think your glass brick home is cool.
I think the glass brick is cool and provided you do water changes every couple of days it is also fine. I personally am pretty lazy about stuff like that so I keep my betta in a 5g filtered tank alone. I would personally not put one in anything smaller then 2.5g.
You could probably modify a light bulb and keep one in it. I'm not advocating that; just wondered if anyone was inspired to keep such an adaptable fish in a...glass cowboy boot? small TV? I know you wouldn't place one in a 400 gallon cichlid tank with Peacock Bass (GULP!) but a small cage isn't asking too much; it's acceptable. I advocate and DO regular water changes and since this guy is in such a relatively small environment we actually do use bottled water (!) to maintain stability. It's easy...HE'S easy. 3 years old now and he acts like a teenager on the strip at feeding time.
Anything above 70 Degrees, my friend. They're SO easy going. This one is at room temperature 72 and above. 80's in the summer. His colors shine year 'round. [smile]
I like the little bowl ugfs, turn the air flow down low with small bubbles and surround the lift tube with a clump of plants and the water flow is not a problem, I just like the way bettas poke around the tank if they have room.