I'm talking about the NH4 "calculator" and "dissolved Oxygen potential" displays. My O2 "potential" reading is currently 8.4, a number which should not be possible given my other current readings of 1.025SG/8.14 pH/24C. Meanwhile, my NH4 reading is sitting at 14ppb while NH3 is 0.001. Does anyone do anything with "dissolved O2 potential" and the NH4 "calculator"?


