cognizant

I recently moved my betta from a 1 gallon bowl like thingie to a 2.5g minibow with the internal whisper filter. I was just wondering how often I should change the water in the new tank? Once a month? Once a week? Every other day? Every day?

Lucy

If it's cycled, readings are 0 for both ammonia and nitrites with some nitrates showing, once a week should be good.
Test right before a water change.

If it's not cycled, and you have ammonia or nitrite readings, change 50% daily until you have the above readings.

Edit: Thank you for getting your betta a nicer home. It'll reward you with the prettiest colors and betta dances.