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Discussion Starter · #1 ·
Hi,

In addition to the 20 G tank I'm starting up, I also have a 2.5 g tank for which I plant to have a betta. This one has be up for about 2 months (1 month with a cartridge and one month when I decided to take it out) and have several plants such as wisteria and java fern in it. Would it be possible to set up a CO2 unit for a tank this small or would that be overdoing it?
 
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