I have so many post's about ppm. What benifits does it offer.
StainKiller Active Member Jan 7, 2009 #1 I have so many post's about ppm. What benifits does it offer.
T tokinman Well-Known Member Jan 7, 2009 #2 ppm=parts per million. tells you how many parts of what nutrients per normally million of water/air. important so you dont over do something and kill what you are trying to grow,
ppm=parts per million. tells you how many parts of what nutrients per normally million of water/air. important so you dont over do something and kill what you are trying to grow,
