What is happening
You are called to a fish hatchery whose tanks have turned acidic overnight.
The fry are dying. They survive at pH 6.0, the hydrogen ion concentration is far from that, and the buffer dose is set wrong.
Measured pH
5.45pH
Target pH
6pH
pH stabilizer. Hydrogen ion concentration at 3.526 µmol/L. Measured pH 5.45 pH, Target pH 6 pH. Currently measured ph is short by 0.547 pH.
What is happening
You are called to a fish hatchery whose tanks have turned acidic overnight.
The fry are dying. They survive at pH 6.0, the hydrogen ion concentration is far from that, and the buffer dose is set wrong.