Question Regarding NatuReef

I want to add the two part Hardness Plus and Alkalinity Plus. The tank I want to add it to is a 30 gallon tank with a 5 gallon refugium. The directions aren't super clear.
If I add it directly, how much should I add?
If I decided to do a drip system, how long should I run it for and how much should be dripping throughout the day?
The directions say something about no more 5 mL and something about running a drip system 5 minutes for every gallon or something along those line. Any help would be much appreciated!
 
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