Defficiency with led maybe too much light?

[Tesla666]

Some cuttings are showing this yellowing down 650W of LED Samsung lmb301h and osram 660nm... I lowered the dimmer to 480W. Same cuts under sodium grows well... So i'm sure it's due to LED liht what do u think?
Also the green is lighter down the LED light...

Cuttings are critical bilbo and cheese uk, both clone only, using coco coir no PH or EC issues.

 

[RealizedReal000]

i cant remember who, but a member here posted this, and i found it useful to use to get the info folks here like



1. Are you growing from seed or clones?

2. How old are your plants?

3. How tall are your plants?

4. What size containers are they planted in?

5. What is your soil mix?

6. How often do you water and what type of water do you use?

7. What is the pH of your water?

8. What kind of fertilizer do you use and what is its NPK ratio?

9. Do you foliar feed or spray your plants with anything?

10. What kind of lights do you use and how many watts combined? (HPS, MH, fluorescent, halogen, incandescent "plant lights")

11. How close are your lights to the plants?

12. What size is your grow space in square feet?

13. What is the temperature and humidity in your grow space?

14. What is the pH of the soil?

15. Have you noticed any insect activity in your grow space?

16. How much experience do you have growing?

 

[growsince79]

Plants under brighter light will need more nutes.

 

[Tesla666]

Plants under brighter light will need more nutes.

I Will try 0.1 more EC

 

[growsince79]

I Will try 0.1 more EC

How much are you doing now?

 

[Tesla666]

How much are you doing now?

1.4 EC in 8 day of bloom

 

[Aqua Man]

Plants under brighter light will need more nutes.

Bang on... definitely not light burn.

 

[Flyingkushman]

had the same issue when I switched to led. Was using coco. Per @Aqua Man advice I upped the ec and started watering twice a day instead of every other day. A week later they looked amazing and never had this problem again.