So 1.5-2 ppm is the therapeutic level that needs to be maintained correct?I did recommend 1.8ml. I don't agree with Fritz dosing recommendation. I had a long email exchange with them and they agree that they have no evidence their recommended dosing works and said they are doing testing to offer new guidance. If you look, they claim that the recommended copper dose is something like 0.25 to 0.30ppm copper. However, they also have told me that 1.25ml/g is 1.16ppm. Very frustrating. So I go off of the testing the Humblefish did saying that 1.5ppm to 2.oppm is the correct dose. That is where the 1.8ml/g comes from.
So 1.8ml per gallon get us to 2ppm?
Why did u add 5ml to your 4 gallons of make up water instead of 7.2ml