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View Full Version : Can someone please help me with PPM


jer001
10-27-2008, 08:33 PM
first time grower and I do not understand what the deal is with PPM. How do you measure it, and so on.

Thank you
TheHappyCamper
10-27-2008, 08:45 PM
ppm = parts per million. its a measure for the concentration of your nutrient mix. to measure it, you need a TDS/EC meter.