I have 2 80 gallon food grade storage barrels that i've found i'm getting a TDS reading of 20ppm. I've tested my r/o water with 2 different readers and have a reading of zero. I'm not sure if there just need a quick vinegar bath or they are leaching from the plastic. I thought i read somewhere a long time ago to run kalk mix in the mixing barrel and this will help with any leaching. Thoughts on this
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