New to Dosing Ca, Mg and Alk...and would like some advice

[RPatsula]

Thank you everyone for your advice, I just thought I'd give you an update as to where I'm at. Last Friday I started dosing just the BRS magnesium solution at approximately 900 mL per day. In total I dosed approximately 4000 mL. Here are my readings since then; calcium went from 325 to 390 ppm, magnesium went from 1000 to 1400 ppm and my pH went from 8.32 to 8.35. I also did a 20 gallon water change as well.
After watching a few YouTube videos I now understand the difference between pH and KH. Apparently I was not measuring KH correctly, so I will measure it again tonight. I will also measure my specific gravity as well to see if it has risen from 1.02. I'm hoping it is back to 1.026 since my water change.
I think now I will be able to dose calcium, alkalinity and magnesium to get my aquarium at the appropriate levels so that I'll be able to dose the BRS to par solution on a daily basis.
Once again thank you
Rick