For what its worth, I use a 2L juice jug, add several tablespoons of kalk, add water, let sit for 1 hour at least, pour the semi-clear solution into the sump but not the concentrated slurry on the bottom.
I do this several times a day into my 210g with 75g sump with no problems & good coral growth in a heavily stocked (both corals & fish) display with a high calcium requirement.
On some of the sps, am achieving at least a cm/month growth.
Anthony
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If you see it, can take care of it, better get it or put it on hold. Otherwise, it'll be gone & you'll regret it!
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