Kalk drip Question

[Chad]

Ok,

I bought some of that Calcium Hydroxide from Shao. After doing some research on what mix I should have per gallon etc, I read alot about the mixture not being exposed to the air. So, I have been dripping top off water without the kalk for the past day or so with the container air tight. Well, it only drips so much then stops sine it becomes a vacum inside the container. My question is, when I do put Kalk into this drip system, how do I do it without introducing air to it? Since I have to have the lid off for it to drip consistantly.

Does that make sense??