Filter question?

[rpgmomma8404]

I'm thinking about upgrading my filters to marina S20 slim power filter on my betta tanks because their adjustable flow looks like it works really well from the few videos I've seen. Does anyone use this filter? Also, what would be a good filter for a 29 gallon? I thought about looking into a 40 gallon type filter but it looks like only whisper makes them and I'd rather avoid buying that filter brand.

I'm also planning on adding sponge filters to each tanks whether I need them or not for extra filtration. Any suggested brands?

 

[mrvincent]

Betta doesn't require filtration. If you already have a bit filtration on your tank, then it's enough.

 

[rpgmomma8404]

Betta doesn't require filtration. If you already have a bit filtration on your tank, then it's enough.

I know but I really don't want to do 100% water changes on a 10 and 15 gallon tanks.