That's ( Parts Per Million ) PPM. Yes it is also used for nutrients. With water you have to count ( TDS ) Total Disovled Solids. PPM's or EC are what you know your adding. Total is what ever else is in there like chlorine in tap water or iron in well water.
C02, parts per million air particles.
LOC NAR on probation Reviewed by LOC NAR on probation on . Co2 setup in my flowering room i will have a co2 setup to speed up slowering and i was wondering if 10 lb should be insufficient Rating: 5