The Planted Tank Forum - View Single Post - 30ppm CO2 (rusty brain)
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Old 01-22-2013, 05:05 PM   #6
funkman262
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I agree that using tank water is no way to measure the CO2, but a drop checker would be more accurate and fairly useful in a planted tank when dosing CO2. Since it uses a 4 dKH solution with typically just baking soda, then it's more accurate than testing the pH of the tank water since there's a lot more going on in there. However, I wouldn't consider it to being close to exact, but it's still a good indicator of the dissolved CO2.
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