By continuing to use the website or clicking Accept you consent to our cookies and personal data policy and confirm that you are at least 18 year old. For details please see Privacy Policy and Terms
It's quite hard to determine the problem under that light, try under normal lighting so we can see the coloration of the leaf itself. If the damage is on leaves at the center and top of the plant then this is a Calcium (Ca) deficiency! If the damage is more severe at the bottom and has tip and margin chlorosis (burns) then it's a Potassium (K) deficiency!
In any way I'd suggest first checking pH levels of the irrigation solution and runoff(ideally 5.5-6.5) then increase the Calcium and Potassium Dosage in your fertilizers by about 30-50% (if calcium wasn't added then it's time to add with 1/4-1/2 of the recommended dosage).
Hope this helps! Good luck and happy growing :)
All 4 plants have been in flush since saturday they will be getting the chop on saturday coming, thw smell coming from the tent when watering is very strong👌👌
@slick88i, yes the pk seemed to stopped the spots from spreading, not sure about the nitrogen however when i added the pk i upped the nitrogen slightly so could well of been. My tent was running a little hot so could of been the heat having a part to play somewhere down the line
@Budmarley2221, I am going through the same issues with my second organic grow with this strain. I thought i was a calcium issue last time that i didnt get a head of so i added cal mag for this grow early but no luck and the brown spots are back in week 4 of veg. Just looking to confirm that the pk nutrients stopped the brown spots from multiplying. Also did you find out if you were a little light on nitrogen as well due to the leaves yellowing in early flower?
Budmarley2221
