Bettas don't need water movement...infact filtration in that small of a tank could cause a lot of stress to a betta. Stress=low immune system, and that means disease or death. Yes, shallow quarters are better for a betta to live in, but its hard to find wide and shallow tanks, especially in the smaller sizes. If you can find one...great, but if you can't thats fine too. I reccomend saving your money on the filtration (weekly water changes aren't gonna kill us
) and investing it into a bigger tank.
I can see why people with multiple bettas buy the beanie boxes, after my barracks are built, my bettas will be in them too, but if you just have a few bettas, get a bigger bowl. A bigger bowl means that you have less water changes a week, so it will work out for you and the betta
. And its only about $1.50-$2.00 more than a 1/2 gallon tank.
We, as fish keepers, take over crowding so seriously when it comes to community tanks, or larger fish, but some how, bettas are always the forgotten ones. For some reason its always this fish (who can grow to be over 3 inches, NOT including the fins) that its "okay" to keep in a small tank.
Alexa