Don't roast me for the noob question please , I'm using 1000W HPS Gavitas in a new room for the first time in 4-5 years, so it's been a while and I never had this problem before when running HPS.
I can't figure out of it's the beginning of light burn or a deficiency. It's not necessarily the top leaves either, some are in the middle and some are close. Not many so far.
Lights are 24-30 inches away from canopy, end of week 2 and temps are about 82-83 with 1350ppm CO2. Highest leaf temp has been 85 according to my thermal camera. I'm feeding 750ppm Athena drain to waste. Ppfd is about 1200 at the top of canopy.
I can't figure out of it's the beginning of light burn or a deficiency. It's not necessarily the top leaves either, some are in the middle and some are close. Not many so far.
Lights are 24-30 inches away from canopy, end of week 2 and temps are about 82-83 with 1350ppm CO2. Highest leaf temp has been 85 according to my thermal camera. I'm feeding 750ppm Athena drain to waste. Ppfd is about 1200 at the top of canopy.
