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Using Ph Drop Method To Ballpark Co2 Concentration Problem

Discussion in 'General Plant Topics' started by cl3537, Mar 6, 2019.

  1. cl3537

    cl3537 New Member

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    I have ph=8 - 8.2 degassed tap water

    My kh tested is ~5(API), although a municipal water report says my carbonate hardness should be between 6 - 7.2

    https://barrreport.com/threads/co2-ph-kh-table.10717/

    I thought this chart would help me and could only overestimate the CO2 in my water but now I am not so sure.

    I have injected CO2 into a 17g tank and gotten to around ph=6.6. Given the inaccuracy in my API pH test kit I'd put my ph drop to be max 1.7 and min of 1.3.

    1) What would be a realistic range of CO2 values that I could expect?

    2) Does the additional basicity of my water (I don't know its source) mean I will underestimate(not overestimate) the CO2 dissolved in the water?

    @Tom Barr I would be greatly appreciatve if you would be willing to give me some insight on my situation.
     
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