The Planted Tank Forum - View Single Post - Calculating CO2 when using Blackwater additives
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Old 08-05-2003, 11:46 PM   #3
m.lemay
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Tannic and humic acids will throw off the co2 chart as will phosphates including those in your water supply. The only way to use those products and know your co2 level is to get a co2 test kit such as the one lamotte sells.

Marcel
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