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Anyone growing in SE Portland who has a similar ppm reading on tap? That is between 17 and 21 ppm?

Thanks. I'll try it out.

Hey folks. I'm a rookie with growing. Been cultivating my meds for less than a year. I use organic soil with pete & perlite (thinking of switching to coco in place of pete). I have some questions for any experts out there. Just got a TDS-3 meter by HM digital. Tested it on my tap and it read 017...