The Planted Tank Forum - View Single Post - Arduino Diy pH probe
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Old 01-28-2013, 04:28 AM   #13
Darkblade48
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Quote:
Originally Posted by Jeffww View Post
The idea is to use a gas permeable membrane to hold some 4dkh fluid and use the ph meter to measure fluctations in ph and translate to co2 concentration. Using the membrane increases response time for CO2 measurement.
I think I mentioned this in another thread somewhere, but mistergreen was working on this project

http://www.plantedtank.net/forums/sh...988&highlight=
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