Dosing Two Part Solution

so i am going to purchase the 2 Part Dosing Kit from Bulk Reef Supply. I was planning on adding the needed amount to my top off system. Is this a good way to dose this or should i purchase a couple dosers?

 

You can only add one solution to the top off otherwise they will react and precipitate out wasting your time, effort and money.

 

oh i see. Ok i will get a couple dosers. I know the kit comes with Cal, Mag, and Alk solution. Could i put one of them in the Top Off System? I was thinking maybe the Mag?

 

I would do Ca or alk with my preference being the alk. Mg is used far less than the other minerals. I used 360ml a day of Ca and alk which is 30ppm Ca and 1.5meg/l of alk. I need to dose 10ppm of Mg a week.

 

ok cool. so if i plan on dosing all three Alk, Cal, Mag. I should be ok with a double doser and the ATO system? Do you recommend any auto dosers? I know BRS is having a sale right now on
BRS 2 Part Doser (1.1 mL Per Minute) - English
I might just pick up two of these?
What do you think?