On 2005-01-12, Ross Vandegrift wrote:

Well, it was funny, but I suspect the original poster wasn't completely
joking --- a filterless tank will need water changes frequently. If I
were going to do it, I'd shoot for daily changes. Lots of people do
fewer if they keep only a single male betta, and they do ok, but I've
rarely seen them do well. I've seen plenty of them dying from terrible
dropsy and bacterial infections.


Just use plants to suck out the nitrates. I've had peace lilies in mine
since the tank started. A former colleauge used pothos (devil's ivy).
I change the water in my one gallon container with two bettas once every
two to three weeks. Both of them behave like poorly trained dogs when
they see me approach hoping I'd feed them.

http://js1.kicks-ass.org/~js1/image005.jpeg

I threw some anacharis clippings in there, but they didn't do so well.
I've recently added some java fern.

--
"I have to decide between two equally frightening options.
If I wanted to do that, I'd vote." --Duckman