Dry leaves and burnt leaves

N toxicity. How about a picture of the whole plant in white light and fill this out.

COPY/PASTE the below list into your forum post.

Answer these simple questions the best you can.
If you do not know, or do not use something; Just say so; Or post
NA (non applicable)

  • What strain, Seed bank, or bag seed
  • Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF
  • Vessels: Pots, Grow beds, Buckets, Troths
  • PH of Water, Solution, runoff (if Applicable)
  • PPM/TDS or EC of nutrient solution if applicable
  • Indoor or Outdoor
  • Light system
  • Temps; Day, Night
  • Humidity; Day, Night
  • Ventilation system; Yes, No, Size
  • AC, Humidifier, De-humidifier,
  • Co2; Yes, No

Always try to upload a clear picture of any issues you may have to allow the community to assist you.

Add anything else you feel would help us give you a most informed answer should be included. Feel free to elaborate, but short and to the point questions and facts will help us help you in a more efficient manner :slight_smile:


ProTerra high drainage soil
PH 6.5 solution
TDS 937
Day 30 to 33 deg c Night 24 deg c
Humidity 55% day
Ventilation 4 inch fan and carbon filter 24 hrs a day
Co2 yes

what is the pH of your soil?

I have always bottom fed so I have never measured drain-off.

Take one cup of soil, one cup of pH’ed 7 water and put them into a container with a lid.
Shake well and let settle to bottom. Let sit for 10-15 minutes.
Get coffee filter or equivalent and drain to separate soil from water.
Test your drained water for pH.

You just performed the Slurry Test for soil PH.

My Slurry Test is PH 6.06.

You’re right on the edge for soil growing.
At that pH you are denying your plant Cal Mag and Phos
This might help a bit.

Many Thanks for your help. I didn’t mention that my tent 2 mornings ago was 37c. I had soaked the plants with Ortho Bug Begone the night before so the humidity must have been very high when the lights came on at 0600. Could humidity and the 600w sodium light have done some of this damage?

My sodium light is 24 inches above my plants.

I’m not sure Ortho is cannabis compatible.
I’ve never had to use any bug spray but I know there are specific formulas used just for cannabis.