Decided to put this here because I plan on modifying an old skimmer to be a kalk-reactor Ok I know basically you toss in a bunch of kalkwasser and it has a pump that stirs it... but beyond that what? First I'm guessing the pump is only on periodically to mix the stuff back up? Second how does the lime-water get into the tank? Is it something you put on a float switch/auto-top off? Is it plumbed in directly to your RO/DI source? You don't pull tankwater and mix do you? Or do you set it for a slow drip/peristaltic pump? Finally I'm guessing you want to make it air-tight so as to minimize the precipitation of lime-water along the surface.