Understanding Hydroponic Nutrient Levels (PPMs, EC)

Knowing and controlling the nutrient levels in your water is a key component of proper hydroponic growing.

This can be difficult when different products, probes, and growers seem to be speaking different languages.  Some measure in PPMs (usually in the USA), EC (usually in europe or the scientific community).

Strap in  for a whirlwind introduction from Just4Growers.com:

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