Trying to understand PPM better

Nutrients Watering
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Is EC the preferred way?

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If you can pick up one of these bad boys youre golden. Best purchase ive made yet other than my Hanna pH pen.

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Mine will be here tomorrow :metal:
Can’t wait to be more confident in my solution

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Thanks for everyone’s contributions to this topic. I’m really glad to see the scaling explained and it confirms some things I have observed and worked out on my own. The biggest takeaway here I think is that spending a little more money on a reliable EC meter rather cheapie tds would better serve the beginner growers if armed with the knowledge to convert to either scale properly.

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