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Bert H · 03-10-2006, 10:07 AM

Very interesting discussion here folks! From apd: http://fins.actwin.com/aquatic-plant.../msg00103.html where George Booth states that the theoretical equilibrium CO2 concentration is: 0.485ppm.

Interesting set of threads going on in apd as well regarding this topic.

The other thing that can play a role in this is with the kh measurement. It is my understanding that kh measures alkalinity values. If you have alkalinity not derived from carbonates, then your kh values would be artificially higher, thereby giving you artificially higher perceived CO2 values. This would explain why a lot of us (myself included) appear to have CO2 values in the 60's with no apparent fish/shrimp stress in their tanks.

Any chemists care to chime in?

03-10-2006, 10:07 AM	#34 (permalink)
Bert H Moderator Join Date: Mar 2004 Location: Alachua, Fl Posts: 4,886 iTrader Ratings: 108 iTrader Positive Rating: 100% Plant Points: 183085	Very interesting discussion here folks! From apd: http://fins.actwin.com/aquatic-plant.../msg00103.html where George Booth states that the theoretical equilibrium CO2 concentration is: 0.485ppm. Interesting set of threads going on in apd as well regarding this topic. The other thing that can play a role in this is with the kh measurement. It is my understanding that kh measures alkalinity values. If you have alkalinity not derived from carbonates, then your kh values would be artificially higher, thereby giving you artificially higher perceived CO2 values. This would explain why a lot of us (myself included) appear to have CO2 values in the 60's with no apparent fish/shrimp stress in their tanks. Any chemists care to chime in?