Kalkwasser Questions

I am in the process of constructing an auto top off that I will run with an auto dosing system. Here is the plan I think, please tell me if there are any problems that you can think of. I want to run a 5g with kalk mixed into it to a auto doser that will drip approx 1g into my 75g over a period of 8 hours. I plan to set this on a timer to drip through the night when ph is lower. Can I mix 5g of kalk today and then add to this every 5 days? I don't have a sump and will be dripping it into my main tank. The 5g jug will have the out line positioned about 2 inches from the bottom to ensure that no sediment enters the doser or tank. My tank used approx 10 mg of calcium daily and about .25 mq/l of alkalinity. My ph is stable at 8.3 and calcium is at 380 alk is 3.5 meq/l

Will this work do you think?

 

I think it should work fine! Kalkwasser is good for keeping the alkalinity and calcium level in your tank up.