with an NFT system. What should your CF METER be at in vegative and then flowering stages?

Is CF something that is for NFT only?? Is it supposed to be something like TDS/PPM/EC??
Adieu

__________________
"If what shone afar so grand,
Turn to nothing in thy hand,
On again; the virtue lies
In struggle, not the prize."--R. M. Milnes.
Hugh Miller said the only school in which he was properly taught
was "that world-wide school in which toil and hardship are the
severe but noble teachers."

what exactley is a c.f. meter

lmfao......

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Disclaimer: I do smoke marijuana, i will forever smoke it, i lead a responsible life and smoking marijuana has never affected my life or anybody around me.
My post's are 100% true.*And anti-smoking organizations can drink a tall glass of shut the fuck up.