So I want to set up a kalk doser. My though it have a 5 gallon bucket with a pump to keep the kalk stirring at the bottom and use an ATO to refill my sump as needed during the night. So i would have an aqualifter pump tube at about the 2.5 gallon mark of the bucket, then the intake for the stir pump at around the 2 gallon mark so it doesnt suck up the kalk powder. Then I would just top off the 5 gallon bucket at neccessary with RO water and new kalk power. Now does kalk only disolve so much into the water. That way all I have to do is occationally add water and new kalk powder when it gets low? A reactor is probably out of the question, but a 2 little fishies stirrer may be a possibility also, but there again Im not really sure how that works either.