My denitrator was fluctuating between -225 to 150.
Keep in mind that my redox prove was inside the denitrator so when cycle is done nitrate is at zero and redox values are NEGATIVE.
Now once I fish new water into the chamber values go as high as my DT redox. So I keep it at 100 with a deviation on 150 +/-




Always at sea;

Dr. Antonio Longo