Hello. Im on my first grow, and I have some questions I hope some of you know the answers to
I'm growing hydroponic btw.
What is the optimal temperature during night and day in flowering? And the same with humidity and EC thanks!!
Well that depends. There are scenarios that change those parameters form room to room and strain to strain.
A general rule of thumb for a basic set up is:
55% to 65% humidity lights on from seedling to mid Flower cycle, mid to late flower 40% to 50% humidity. Then for lights off, try to stay under 50% humidity with good air circulation from fans and that should keep most grows safe.
As for temps try to keep them under 85⁰f but over 75⁰f from seedlings to mid flowering cycle. Then you want to try to keep your mid to late flowering temps at about 70⁰f to 72⁰f to preserve terpenes. During lights off, try to stay about 10⁰f cooler than your lights on temp but don't go lower than 65⁰f.
Now you can throw everything I said out the window if you are trying to maintain VPD (vapor pressure deficit) or are using CO². But that's a story for another time.