If you intend to dose directly into the tank, maybe you can start at a extremely slow drip, as slow as possible. Then monitor your parameter and life stock over a week, if everything fine, then increase a bit. Your limitation will be the PH, if you set your PH limit at 8.4 for example, if the rate that you dose often exceed the limit, you know that it too much as far as PH is concern. Hopefully that help. Any senior have any other opinion, can share? I also would like to learn more in this area as well.