DAY 0
Sand Added this afternoon
Particle Size - Not sugar fine sand but the what I have available at the moment. If I don't get any positive NNR I may have to replace. Will also demonstrate how much impact particle size has regarding NNR.
Starting Nitrate Tests
ORP (DSB) = 300mV (dropped to 180mV within 20min of adding sand)
pH (DSB) = 8.00
Drip rate = 0.67 drops/min