The Planted Tank Forum - View Single Post - Affordable CO2 sensor?
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Old 11-10-2012, 09:41 PM   #26
mistergreen
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I had a chance to play with it. It's reading ambient air with ~2000ppm of CO2 and as soon as I dunk it in water inside a breather bag it shot up to ~8000ppm - 10,000pmm (maxed out)... I contacted the manufacturer to see what's up. I though air was only suppose to have ~360ppm and CO2 in water is suppose to be less than air.
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