Just to narrow down my routines and put numbers to it.
Seachem Reef Builder Alk.
.50lbs for 170 estimated gallons.
Seachem Calcium or Advantage Calcium(what ever)
.08lbs for 170 estimated gallons.
Don't ask me why I dose by weight, I just do.
Second thought it's because my scale is too big to grow legs and walk away, where as my measuring utensils vanish never to be seen again.
I will have to get back with you on the Mag for when I do a water change.