
I currently have 3 of these at home. All 3 are brand new and all 3 give different readings. 1 says 1360, 2 says 1490 3 says 1570. So what is this? The jump in ppm by 200 points is enormous. I order a bunch of Red Sea Magazines to see where I am at all. I've lost all faith in Salivert.

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