Humidity or not humidity issue?

[Galgrows]

I don’t even know what any of this meaaaaaans
Seriously, I know it’s a help to some, but I’m just old school with it. Dli, vpd par ppfd all of that is kinda useless to me. It’s wild watching folks make heads or tails of it and applying it.
Wild to see, always willing to learn, def won’t ever use them.

I'm with you i'm just a old weed grower LOL