I need advise. 1st grow and been in veg for the past 8 weeks.
Trying out the "sea of green method" (clipping tips to branch out like rain deer antlers) I have had already trouble with nute lock up which I flushed and seemed to recover except two of the plant strands "purps". The two "purps: don't absorb as much water as the rest.
THen they got hit with heat stress from 2 week heatwave where temp got as high as 99 to 120 (cool down method - water mister on timer 3 times per day for 2 minute intervals).
Temp in the closet is normally anywhere from 20% to 50% humidity and temp ranges from anywhere from 60 at night to 75 or 85 with lights on average.

I have the following set up;
Closet: 2 deep x4 wide x 6 high
Main light: one 400w MH (interchangable ballast to 400HPS
compliment light: two cfl 2000 lumens each - blue spectrum 40w
6 clones (2 pot of gold, 2 purps, 2 Grape Deisel) in 3 gallon pots
Medium: Fox Farms Ocean Forest soil
Watering: one ever other (in timer for 1 minute)
Fert: once every month (Fox Farms: Grow Big 6-4-4, Tiger Bloom 2-8-4, Bloom Big .01-0.3-0.7)
Pesticide: 1.5 tsp of Neem Oil + 1.5 tsp dishwashing soap + 1 quart of water - once a week.

Problem:
1. Leaves on bottom are turning yellow and drying up {lack of light or nutes?}
2. other leaves have black growth which then turns to dark brown and spread {fear of Mold}
4. the 2 "purps" have gold colored main stem and very thin {is it mold or just hurting since the nute lock up?|
3. Fan leaves get white specs (spots that are about 2 millimeters in diameter) {heat stress?)
4. Leaves curling downward {probably overwatering?}
5. Wilting stems after 2 days without water (lack of water?)
spqr420 Reviewed by spqr420 on . Blackened leaves, wilting and drying up - need help - 1st grow I need advise. 1st grow and been in veg for the past 8 weeks. Trying out the "sea of green method" (clipping tips to branch out like rain deer antlers) I have had already trouble with nute lock up which I flushed and seemed to recover except two of the plant strands "purps". The two "purps: don't absorb as much water as the rest. THen they got hit with heat stress from 2 week heatwave where temp got as high as 99 to 120 (cool down method - water mister on timer 3 times per day for 2 minute Rating: 5