The Planted Tank Forum - View Single Post - Affordable CO2 sensor?
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post #5 of (permalink) Old 11-04-2012, 01:25 AM Thread Starter
Children Boogie
mistergreen's Avatar
Join Date: Dec 2006
Location: Cincinnati
Posts: 16,469
Oh, there is a difference between ppm in air and in water. Read the text below the calculator.

I'll have to study it to get the math. That was my confusion when I wrote to the manufacturer.

So I can hook this sensor to an arduino (in side a drop checker or breather bag) and have the arduino do the math for water (by weight) and control the solenoid to get the proper co2 concentration.

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