All my betta's love water bubbles,
And it will keep your water surface clearer,
If it's new for your betta he might act scared/unsure of it at first.
it's best to control the flow with a valve and adjust it until you find out what he's comfortable with,
I personally removed all my underground filtration systems and just use gravel and the airstone or a bubble wall...
The one thing with bubbles/air stones,
Surface movement pretty much destroys bubble nests,
But if you don't plan on mating him then its not a problem....
Last edited by Chicklet; 04-03-2009 at 12:47 PM.