3 Gallon tank water changes.

[bettagirl28]

I have a 3 gallon tank with one betta in it.
How often should I be changing the water and how much of it should I change?

[Oldfishlady]

Filtered 3gal-twice weekly 50%...1-50% water only and 1-50% with substrate vacuum or stir and dip

Unfiltered 3gal-1-50% and 1-100% weekly unless you have live rooted plants