We had 14 drops X 17.1 = 239.4 mg/L Doesn't that seem high, looking at Chris' group.... I can't read the papers too well, but our pH was 8 and there's was bit higher 8.8 is that correct? Dissolved Oxygen was 34, which we think was high also. Ammonia was 2, the same. Turbidity was fairly clear at the pond.