dragon wrote:
My bettas are all in unfiltered 2.5 gallon tanks. How often would
ya'll recommend I do a 100% water change? I've been doing it once a
week in the past, but the fishkeeper at my LFS thought that was too
often. So, what does everyone think?

dragon


If there's one fish per tank, I'd suggest a 50% water change twice a
week for the first month. Later, you could probably do 50% once a week,
especially if you have some live plants.

Just my opinion; I'm not a betta fancier but have occasionally kept one.

Steve