Just to update you all. I have sort of located the problem. It appears to be connected to the media in my RO system.My RO water tests perfect out of the unit, but apparently something in the water is missing that I'm not testing for. And I have tested it for everything! I can mix a fresh batch of salt{ tried three brands}aerated, all PH tests 7? Went over to a buddies today and took some of his RO...8.3, same salt? Apparently whatever the waters missing not only affects the buffering capability of the water but also the calcium saturation. Water from my RO Ranges from 340 to 360 max with the salts I have used. Even the addition of Kent calcium used in conjunction with a Kalk drip only produced 360.I've got a call in to my RO manufacturer to see what exactly is in the media, so we'll see.Anyone ever heard of this? It has me and others stumped?:frustrat: