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Old 02-07-2018, 06:27 AM
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Frogger Frogger is offline
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The purer the cacl the better. We add a lot of calcium and the question is what else are you adding to your tank besides the calcium. Whatever else is in the salt will eventually start to add up.

Randy recommended the Dow Flake back in the late 90's/ early 2000's. At that time there wasn't any other option for cheap calcium chloride.

Now with the advent of Bulk Reef Supply and others there is a reasonably priced option in bulk cacl. The cacl we get from our fish stores is likely food grade or better. I would suspect the Aquaforest product is a higher quality then the bulk cacl becuase they likely use the same cacl as in their salt mixes. I do not believe the Dow product is food grade (I may be wrong), but it is not held to as hi a standard because it is used primarily for ice melting and brine solutions.
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