growlo_b
- 21
- 3
Hey all,
I have 4 plants in late veg and one started showing slight yellowing in the tips a couple of days ago. The yellowing really hasn’t really progressed at all since I discovered it but I’m still wondering what it could be. It’s odd because all other plants are pristine.
I first thought it could be nute burn but after measuring runoff ec, I actually found it to be slightly lower than the feed ec. The feeding is about 1100 and runoff is a little less than 1000. That’s right on track based on the Coco for Cannabis feed schedule I’m following.
I then thought it could be light stress but the lights are a couple of inches above manufacturer recommended height.
The yellowing is just in the tips and mostly in the newer leaves.
Any ideas? See the picture for details.
Grow Details:
- Coco
- General Hydroponics nutes
- LED lights (Mars Hydro SP250) at 20” currently
- Day temp: 75*
- Night temp: 69*
- RH: 60-65%
I have 4 plants in late veg and one started showing slight yellowing in the tips a couple of days ago. The yellowing really hasn’t really progressed at all since I discovered it but I’m still wondering what it could be. It’s odd because all other plants are pristine.
I first thought it could be nute burn but after measuring runoff ec, I actually found it to be slightly lower than the feed ec. The feeding is about 1100 and runoff is a little less than 1000. That’s right on track based on the Coco for Cannabis feed schedule I’m following.
I then thought it could be light stress but the lights are a couple of inches above manufacturer recommended height.
The yellowing is just in the tips and mostly in the newer leaves.
Any ideas? See the picture for details.
Grow Details:
- Coco
- General Hydroponics nutes
- LED lights (Mars Hydro SP250) at 20” currently
- Day temp: 75*
- Night temp: 69*
- RH: 60-65%