### Comment:
Ah nice. I used to keep a betta harem, it was a lot of fun. I had good results with planting the tank with just a bottle of sugar/yeast/water with a tube on the end of it for home-made CO2 generation.

### REPLY:
I’ve always wanted to set up co2. I have another tank, a planted 5 gallon with shrimp which would be perfect, but the top of the tank won’t allow anything else to be put in or anything.

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