Wanted to know who is using kalk in topoff and how your doing it. I use to pour a gallon of rodi with 2tsp of kalk everyday that was my evap everyday 1 gallon. But now my topoff is a 20gallon tank how can I still do this I figure once a week I fill up a 5 gallon bucket and pour it into my 20gallon tank my guess is 2tsp per gallon and pour it in. Not sure what that would do because of the kalk would eventually end up on the bottom and then when I pour new in it would stir all the concentrated kalk up at the bottom. Sorry for the run on thanks in advance