I now have seven plants growing in Late Veg (45 days from the day the seeds popped). I have one Laughing Buddy plant that has one branch that is getting the pictured "dry leaf syndrome". The leaves only show up on this one branch of the plant and it seems to be random (low to high left or right). The first time it happened it was at the top of the plant and thought it was light burn, now I see it in the lower part of the plant. I believe this plant had a short stint of Magnesium deficiency so I cut the nutrients to 50% for a week and increased the pH from 6.0 to 6.2 and that seems to have stopped that problem. But what is causing the dry curling leaf and how do I correct it? It started early in the growth cycle. All of the other plants (and branches on the subject plant) look in very good shape.
I grow indoors with 1000 W HM, grow medium is 1/3 parts Ocean Farm, 1/3 part coco and 1/3 part perlite. I use RO water and Emerald Harvests 2-Part nutrient package at 75% recommended concentration. I pH balance to 6.0 normally. The temps are 67F to 84 F but usually around 77F. Humidity is between 45% and 60% but is normally around 50%. I have good air ventilation and circulation. I feed them on Sunday and water them on Weds or Thurs (generally drain to waste) with 7 gallons going in (1 gallon for each plant) and 2.25 total gallons drain to waste. My light is 24" above the plants and getting 35K to 55K Lux at the canopy tops. No bugs, mold, etc. noticed. The bottom half to 2/3 of the plants are defoliated. I top the plants when they need it.
I grow indoors with 1000 W HM, grow medium is 1/3 parts Ocean Farm, 1/3 part coco and 1/3 part perlite. I use RO water and Emerald Harvests 2-Part nutrient package at 75% recommended concentration. I pH balance to 6.0 normally. The temps are 67F to 84 F but usually around 77F. Humidity is between 45% and 60% but is normally around 50%. I have good air ventilation and circulation. I feed them on Sunday and water them on Weds or Thurs (generally drain to waste) with 7 gallons going in (1 gallon for each plant) and 2.25 total gallons drain to waste. My light is 24" above the plants and getting 35K to 55K Lux at the canopy tops. No bugs, mold, etc. noticed. The bottom half to 2/3 of the plants are defoliated. I top the plants when they need it.
