Quote:
Originally Posted by bertoni
Adding magnesium will tend to drop the rate of abiotic precipitation because magnesium fouls crystals as they form. That's one of the reasons that saltwater can be supersaturated with respect to calcium carbonate.
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my tank saltwater's magnesium is 1550ppm because of dosing epsom salts water. Now there are some calcium carbonate "stone" formed on the surface of sand bed.