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CO2 test kit and pH



Several people responded to my pH/CO2 problem. The overwhelming response was 
that my CO2 test kit was wrong. So I tested it by taking some of my "70 ppm" 
water and aerating it for about an hour with an air stone. The results: the 
aerated water measured out at 40 ppm CO2. So I'm chucking my Red Sea CO2 kit 
and just going back to using the chart. Thanks for all the input.

Craig