What I did when I was first dialing in my system was once I got my Mg to where I wanted it, I did a water test to confirm, then didn't dose anything for 24hrs and did another test. That should give you a pretty good idea of what your tank consumes in a 24 hr period and give you an idea of what to dose per day. Then start dosing that amount. Your Ca and dkh should stay steady if you start with just dealing with your Mg. Your current Ca and dkh levels are fine so you don't really need to do anything with them right away. Go a week with just dosing Mg and see if it stays pretty solid or if it creeps up or down and adjust accordingly. I would test all 3 every time but wouldn't deal with the other 2 unless there's something drastic. This will give you good practice with your testing and show you the relationship with those big 3 and how they interact with one another. Once you've gone a week without any real changes in your Mg levels, then move on to your other 2 the same way. Slow and methodical and write down what you did and how it affected everything.
Dom
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