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Usually the part A bottle has you add some and wait about 10 minutes so that it's thoroughly mixed in your system and then you add an equal amount of part B. I find the bottle usually tells you what the calcium content is. If you let me know that, your current calcium level, and what you'd like your calcium to be at, I can tell you exactly how much you'd need to add to get your tank to where you'd like it. I generally keep mine around 450 ppm Ca. It's hard to do an automatic dosing because they have to be separated in time, but if you had 2 dosers you could do it with a couple timers.
Can kalk alone keep alk and calcium at the right level???
If so can I use a ph controller to add it ???

