Tips brown/yellow and curling, brown/yellow leaves

[Davyg]

I see a little nute burn as well. VPD is vapour pressure deficit. Which is the relationship between heat and humidity. Here’s a little reading for you

Vpd help please!

I’m confused about vpd(vapor pressure deficit). It seems to be there are conflicting opinions out there. Attached I have two recommended charts for vpd. One is more general and states for a temp of 77 Fahrenheit/25 Celsius the ideal humidity is 70%-75%. On the other chart it states for plants in mid flower the ideal humidity for the same temperature is 45%-55%. That’s a huge difference! What is right?? Thank you. [image] [image]