Some kind of tank cleaner for my Betta?

I just wanted to add that as far as I know, the smallest Minibow tank is 2.5 gallons. Good enough room for a single betta, IMO but that's it.
 
i have a betta in a 2.5 gallon heavily planted tank. he's happier than a pig in mud in there.

small tanks are much better when planted, as the plants help to keep the water quality stable/good between water changes.

i would advise going no smaller than a 2.5.
 
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