The Planted Tank Forum - View Single Post - The Importance of CO2 in a Planted Tank
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Old 10-12-2012, 03:09 AM   #7
tetra73
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Quote:
Originally Posted by Vincent Tran View Post
He spent $25 on a tube(?) and diffuser and 5 on the sugar and yeast.

Oops, you are right. However, that $5 sugar/yeast CO2 won't last for few months. Couple of weeks top, assuming we are talking about just one bottle. Generally, in a larger tank, something bigger than 20g, the cost is no longer cost effective.
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