The Grow Awards 2026 🏆 
Tap water
Papa_Tstarted grow question 4y ago
I’m just curious as to what PPMs people’s tap water comes out at.
I’m currently at 58 PPM but I’ve seen 71 at the most.
What’s you?
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Salokinanswered grow question 4y ago
My tap water reads somewhere around 350 - 400 ppm after reverse osmosis treatment it comes out at around 15 - 25 ppm.
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GMSgrowsanswered grow question 4y ago
My well water comes out at 70 ppm 0.4 ec. Always include that in my total ppm for feeding. Ph of 6.3
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Hempy_The_Kidanswered grow question 4y ago
I'm at 240ppm and 7.2PH very hard water. But I'm saving a mint on not buying calmag 🤪
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Papa_Tanswered grow question 4y ago
This isn’t a question for advice. It’s just a curiosity of what PPM their tap water is at.
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ojetepelonanswered grow question 4y ago
90 ppm, you're going to need a calmag supplement till you reach 256 tds ppm wich is 0,4 ms/cm
some products have calcium and nitrogen in them so check the % of calcium or mg in to adjust the amount of calmag.
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GrowCNanswered grow question 4y ago
My well water is about 170 ppm, mostly with calcium and magnesium. It has a pH of about 7.6 but both number vary season to season and year to year.
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KushGANGanswered grow question 4y ago
Hello my tap water got an EC of 0,572 in general. But it is different for everybody. Good luck. Bye
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DoctorGreenThumbanswered grow question 4y ago
My tap water is between 4-7 ppm @ ph of 6.7
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