I won’t lie my ppm meter I was “looking” at water pitchers at Walmart and 1 came with a ppm meter which “accidentally” fell in my basket!
I grow organic tho using homemade fermented inputs so ppm meter is pointless for most part for me! A full knf feed with Calcium/fermented fruit juice/ fermented plant juice/ OHN u name it if I’m lucky it may hit 50ppm adding to RO water with almost a neutral base!
This thing tho been a lifesaver and every bit worth the cost in my opinion!
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