starke
Well-known member
So, I’ve run into a little issue that I am not sure of the cause and could use some help.
Current Grow & Parameters:
Super Lemon Haze clones in week eight of flower.
Three gallon Hempy Buckets with 75/25 Perlite/Vermiculite mix.
Jacks Pro Hydro and Calnit at 1:67 ratio, currently at 500ppm/.5 scale
Nutrient ph is 5.9 (Bluelab meter calibrated this morning.)
URSA LED for light (640W actual full spectrum COB)
5x5 Tent
6 inch Hyperfan with Can-Lite Carbon filter
Passive intakes
10 inch circulation fan
Temps 80 – 82f
Humidity 50 – 55%
One plant of four effected. Symptom first appeared last week on one tiny branch a day after I staked and strung up colas. The leaves on the branch yellowed rapidly over the course of two days and then withered. I thought I had possibly broken the branch during the staking session so I just harvested it for a tester. The same symptoms are now beginning on two other much larger branches as shown in the below pics.
To my inexperienced eye it looks like N deficiency but that does not make sense as all four plants are receiving the same nutes and are clones from the same mom.
Fed this morning and runoff ph on the three healthy plants was 7.1 – 7.2. Ph on the sick plant was 7.5. Runoff ppm on the three healthy plants was 700 – 740/.5. Runoff ppm on the sick plant was 1000/.5.
So now I’m thinking maybe root issues as the plant appears to not be uptaking nutes, if my thinking is on track. Opinions/advice welcomed.
Documentation of this grow to date can be found in the Grow Diary link in my signature.
The symptoms pictured have manifested between 12/14 and today.
Current Grow & Parameters:
Super Lemon Haze clones in week eight of flower.
Three gallon Hempy Buckets with 75/25 Perlite/Vermiculite mix.
Jacks Pro Hydro and Calnit at 1:67 ratio, currently at 500ppm/.5 scale
Nutrient ph is 5.9 (Bluelab meter calibrated this morning.)
URSA LED for light (640W actual full spectrum COB)
5x5 Tent
6 inch Hyperfan with Can-Lite Carbon filter
Passive intakes
10 inch circulation fan
Temps 80 – 82f
Humidity 50 – 55%
One plant of four effected. Symptom first appeared last week on one tiny branch a day after I staked and strung up colas. The leaves on the branch yellowed rapidly over the course of two days and then withered. I thought I had possibly broken the branch during the staking session so I just harvested it for a tester. The same symptoms are now beginning on two other much larger branches as shown in the below pics.
To my inexperienced eye it looks like N deficiency but that does not make sense as all four plants are receiving the same nutes and are clones from the same mom.
Fed this morning and runoff ph on the three healthy plants was 7.1 – 7.2. Ph on the sick plant was 7.5. Runoff ppm on the three healthy plants was 700 – 740/.5. Runoff ppm on the sick plant was 1000/.5.
So now I’m thinking maybe root issues as the plant appears to not be uptaking nutes, if my thinking is on track. Opinions/advice welcomed.
Documentation of this grow to date can be found in the Grow Diary link in my signature.
The symptoms pictured have manifested between 12/14 and today.