help with kamoer dosing pump

[lordicon]

Hi all i don't post much just read a lot but now i need some help!!!
I want to get my dosing pump up and going and i know how to program it
but my question is on how much my reef tank is using alkalinity!
5 days ago my readings where:
alk 9.7 dkh
cal 425
mag 1320
phos 0
nitrate 0
My tank is 120 gallons total water volume! and now my readings are:
alk 8.4 dkh
cal 450
mag 1320
phos 0
nitrate 0
I use fauna marin balling salts and i can not get my dosing right i have there calculator and says i need to add 0.3 dkh cons/day! now how do i get that to ml so i can program the dosing pump! not sure what to do its going to be easy answer i bet and im going to feel like a dumb dumb