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Leaves yellowing then curling and burning.
Is this a deficiency of some type? It starts as a lime green/yellowing and then becomes like a burn. It is affecting the upper leaves. Lights are air cooled and not hot to the touch. First I thought it was light bleaching. Also, the plants are half the size as they were at this point last round.
The first pic is a week ago, the second is the progression.
Thanks for any help.
Hydro Growers:
1. Are you growing from seed or clones? Clones
2. How old are your plants? 28 days into 12/12
3. How tall are your plants? 3'
4. What type of hydro system are you using? Ebb&Gro buckets - Hydroton
5. What brand/type of nutrients are you using? House and Garden
6. What is the Ph of your nutrient solution? 5.8
7. What is the PPM/EC of your tap water? RO Water - 0 PPM
8. What is the PPM/EC of your nutrient solution? EC 1.6
9. What is the temperature of your nutrient solution? 72*F
10. Does your PPM/EC show a rise or fall when you do your daily PPM check? PPM same or slight rise
11. Does your pH show a rise or fall when you do your daily check? Slight rise
12. Do you foliar feed or spray your plants with anything? no
13. What kind of lights do you use and how many watts combined? (HPS, MH, fluorescent, halogen, incandescent "plant lights") HPS 600W x 6
14. How close are your lights to the plants? 12"- 16"
15. What size is your grow space in square feet? 150 sq ft.
16. What is the temperature and humidity in your grow space? 75-85*F - 50%
17. Have you noticed any insect activity in your grow space? None
18. How much experience do you have growing? 4th grow.
Is this a deficiency of some type? It starts as a lime green/yellowing and then becomes like a burn. It is affecting the upper leaves. Lights are air cooled and not hot to the touch. First I thought it was light bleaching. Also, the plants are half the size as they were at this point last round.
The first pic is a week ago, the second is the progression.
Thanks for any help.
Hydro Growers:
1. Are you growing from seed or clones? Clones
2. How old are your plants? 28 days into 12/12
3. How tall are your plants? 3'
4. What type of hydro system are you using? Ebb&Gro buckets - Hydroton
5. What brand/type of nutrients are you using? House and Garden
6. What is the Ph of your nutrient solution? 5.8
7. What is the PPM/EC of your tap water? RO Water - 0 PPM
8. What is the PPM/EC of your nutrient solution? EC 1.6
9. What is the temperature of your nutrient solution? 72*F
10. Does your PPM/EC show a rise or fall when you do your daily PPM check? PPM same or slight rise
11. Does your pH show a rise or fall when you do your daily check? Slight rise
12. Do you foliar feed or spray your plants with anything? no
13. What kind of lights do you use and how many watts combined? (HPS, MH, fluorescent, halogen, incandescent "plant lights") HPS 600W x 6
14. How close are your lights to the plants? 12"- 16"
15. What size is your grow space in square feet? 150 sq ft.
16. What is the temperature and humidity in your grow space? 75-85*F - 50%
17. Have you noticed any insect activity in your grow space? None
18. How much experience do you have growing? 4th grow.