The Planted Tank Forum - View Single Post - WANTED: Your best Hagen CO2 recipes!
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post #3 of (permalink) Old 09-08-2004, 10:04 PM
mpb
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I use the Hagen ladder with a 2l bottle. Does it count?

Anyway one thing that does make the recipe last longer is to activate the yeast culture using the guideline on this article:
http://www.qsl.net/w2wdx/aquaria/diyco2.html
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