Help with leaf problem

Looks like phosphorus deficiency. What’s your runoff ppm and pH?


Welcome to the forum @Tonysmom

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Answer these simple questions the best you can. If you aew not sure, just bring it to oue attention. We will figure it out.

  1. Indoor or outdoor? - size of grow?
  2. Origin of seeds?
  3. Regular, feminized, or autoflower?
  4. Origin of water. PH, EC/TDS of source water?
  5. PH and TDS/EC of if mixed solution?
  6. Grow method? Soil, Soil-less, Coco, Hydro, Aquaponics. Please explain.
  7. Nutrients or fertilizer system used.
  8. What type of lighting are you using? LED, HID (MH, CMH, HPS), or Fluorescents? Please elaborate.
  9. What are the temps in your grow space? Day / Night?
  10. What is the RH = relative humidity in your grow space? Day / Night?
  11. AC, Humidifier, De-humidifier?
  12. Do you have a Ventilation system? Size? 4", 6"?
  13. Co2 Yes / No?
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I agree with @Borderryan22,check your ph and test the ppm of what your feeding and the ppm of your runoff. Assuming your growing in a soiless medium.

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How about a picture of the whole plant?


Welcome to the community. :+1:

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Thank you for the welcome.

  1. Indoor 5 plants
    2 Origin is ilgm (I hope that’s what you mean).
  2. Feminized
  3. The best I can tell you about source of water is I use reverse osmosis. I have both GSC extreme and afghan. The pH of the soil is 7.0 ( just noticed it is a bit high)
  4. Soil, foxfarm ocean forest medium.
  5. 0
  6. led Plant Grow Light, VIPARSPECTRA Newest Dimmable 3000W LED Grow Light, with with Bloom and Veg Dimmer, Dual Chips Full Spectrum LED Grow Lamp for Hydroponic Indoor Plants Veg and Flower(10W LEDs 300Pcs)
  7. Day 76 night is 68
  8. 35
  9. No humidifier
  10. LAYOND 6” Inline Duct Fan for…

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the 1st pics of the leaves, are they at the bottom of the plant?

welcome to the community.

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All over the plant, predominantly at the top though.

@Tonysmom maybe its what @Borderryan22 stated but for me its hard to see

I like to retract my last statement i believe its a manganese def not a phosphorus def as phosphorus deficiency is a rare occurrence in cannabis plants and manganese def looks very similar to phosphorus def and get mixed up quite regularly

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Thank you for the response. I am going to adjust the pH which hopefully will help the plant absorb the nutrients in the soil. All of the best to you.

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