HELP!! Yellow with spots and I have no idea

TUF

TUF

Member
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Hey everyone,

Im running a single plant NFT with 3 gallons in the res. ( this is an experimental setup)PH is 6.1 ppm 1100 day 30 flower not sure what the strain is. 600w hps 75% and FF nutrient line...just grow big big bloom and tiger bloom. Im out of town and my caretaker found a few of the larger fan leaves around the top of the plant looking like this. Anyone have any suggestions?

Thanks everyone i appreciate it.

TUF
 
TUF

TUF

Member
sativa indica pits said:
https://www.icmag.com/ic/showthread.php?t=11688 check here
Click to expand...
Sorry about that...

Hydro Growers:
1. Are you growing from seed or clones?

clone

2. How old are your plants?

day 30 flower

3. How tall are your plants?

4 foot

4. What type of hydro system are you using?

NFT experimental (one plant)

5. What brand/type of nutrients are you using?

Grow big hydro, big bloom, tiger bloom, FF schedule

6. What is the Ph of your nutrient solution?

6.1

7. What is the PPM/EC of your tap water?

40

8. What is the PPM/EC of your nutrient solution?

1100

9. What is the temperature of your nutrient solution?

62 F

10. Does your PPM/EC show a rise or fall when you do your daily PPM check?

Rise

11. Does your pH show a rise or fall when you do your daily check?

fall

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")

600w HPS x1 75%

14. How close are your lights to the plants?

9 inches (strain has tolerated this in the past)

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

4 feet x 6 feet

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

t-77 h-44%
17. Have you noticed any insect activity in your grow space?

not a single bug

18. How much experience do you have growing?

Not very much

Thank you to all that are helpful!
 
Cascadian

Cascadian

Well-Known Member
Calcium deficiency would be my guess too. Especially if you are seeing it on the new growth. The leaves also look like they need magnesium, maybe pick up some calmag.
 
Ego Fum Papa

Ego Fum Papa

Active Member
It's a calcium deficiency, especially since your taps ppm is so low, it's almost RO low. K might be slightly locked out due to pH, but I'm not sure about that one. Supplement with calmag and bring your pH to 5.8-5.9 Nutrient_Chart2470.png
 
TUF

TUF

Member
Cascadian said:
Calcium deficiency would be my guess too. Especially if you are seeing it on the new growth. The leaves also look like they need magnesium, maybe pick up some calmag.
Click to expand...
Thank you for helping me out Cascadian You were right. Picked up some calmag and everything is fine. Thanks again.
 
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