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**Hoppy** · 11-04-2012, 01:48 AM

There must be a relationship between ppm in the water, and ppm in the air trapped above the water. I assume the partial pressures of the CO2 would be equal, but what would the relationship be between the two ppm's?

11-04-2012, 01:48 AM	#3
Hoppy Planted Tank Guru (View User Tanks) PTrader: (54/100%) Join Date: Dec 2005 Location: Sacramento, CA Posts: 17,215	There must be a relationship between ppm in the water, and ppm in the air trapped above the water. I assume the partial pressures of the CO2 would be equal, but what would the relationship be between the two ppm's? __________________ Hoppy Last edited by Hoppy; 11-04-2012 at 01:59 AM.. Reason: add illustration