auto Dosing help!!

[e46er]

i have a 120G system total volume

it uses about 1 DKH a day so about 20 ppm calcium every 3 days

i got sick of daily dosing and unstable parameters so i ordered the twn aquadoser from JL and it came today

i was going to use 5 G salt buckets as the resevior for Alk. and Calcium


now a few questions do most people make the extra batch really potent and have the pump run like 5 sec an hour or do you set it for a 10 min a day ect... id like to not have to mix up the resevoir weekly

and finally the hard part

can someone help me with the math for how much product to put in 5 G of water and for how long to run the pumps and how often per day to get the desired results???

i use seachem reef builder and calcium chloride dihydrate (dows flake)

than you in advance!!!!!!