Yesterday when I got my KH test kit I found my CO2 to be at 8 (pH 7.4 and KH 7 = CO2 8).
Yesterday I just had the hose running into an air stone at the bottom of the tank.
To raise the level, I made a simple reactor. I placed a 4 1/2" light-weight clear plastic flower pot dish upside down in the water at the very top. Rising CO2 bubbles filled it to hold it up there.
I thought I had the perfect reactor for my little 10 gallon as the dish filled up to about 85% full, but no more. To me, that meant that the CO2 was dissolving. (Earlier I had made one with the bottom of a clear plastic drinking cup. It was not big enough and every once and a while a big "gulp" of CO2 would escape to the surface of the tank -- undissolved.
Now I am very disappointed to find that after a full night the pH, KH, and calculated CO2 numbers are exactly the same. I don't see how this could be.
Any ideas what to do next? I know that there are better types of reactors, but since no CO2 is escaping to the surface it would seem to me that mine is perfect. (Obviously not!)
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