So Randy are you saying under every circumstance the hobbyist shouldn’t dose 1:1 because other than (luck) your alk and cal numbers will be here, there and everywhere. So basically “chase numbers” ?There are some other ways you are adding alk or calcium to the water (or consuming it), so the needed dosing is not always 1:1.
Water changes, rising or falling or dosing nitrate, and sulfur denitrators all mess with the levels of alkalinity and/or calcium. So can using tap water for evaporation top off.
I always thought 2 part was a science based balanced dosing system to keep you in line with NSW and tank success. I don’t do tap water but I do water changes. Buckets, bags or boxes of salt that we buy are all close but significantly off from each other when it comes to parameter levels. One salt brand can list their calcium at 410 and another at 490? Every seasoned reef will tell you “don’t chase numbers” I’m sure you’re one of them. But again, I always thought dosing 2 part equally was a scientific way to avoid chasing numbers. Appreciate your feedback.