Brown spot and purple color on CBD AUTO CHEESE

[Fujihiro]

Hello!

My plant feels sick like you can see on the pics, i usually put nuts 1 time on 2 and i never put more than 50% but i dont have EC meter so its hard to be sure if i have over feeding or the contrary.
I had PH trouble but its solve now, my runout PH is now 6.1, it was too low before. The water running out is very light brown.

My light LED 250W is at 14", the temperature is 26° C and the humidity arround 40/45%.
Intractor et extractor run 24/24 and i have one small fan who runs every 15mn.

My box is very clean.... I use Go Box for the nuts and i have Fox Farm Happy Frog, im at 23 day of blooming.
I forgot to said my pot is 8L and Alltatup suggest me perhaps my roots are root-bound so i will try to re-pot gently next week in 5 gallons bag.

Do you have any idea?

Thanks!

[ellz]

Hi Fujihiro! It looks like you may have a manganese deficiency, which you can read more about here: http://www.growweedeasy.com/manganes...iency-cannabis

Another possibility is a calcium deficiency. If so, here is a page on how to recognize it and resolve it: http://www.growweedeasy.com/calcium-deficiency-cannabis
Best of luck with your grow!

[Fujihiro]

Hi thanks! I was thinking about phosphorous too because the peticles are purple, so i will give 100% of the recommanded dosage for the nuts and wait few days.

[ellz]

The purple tips could be caused by temperature issues. Does it ever get colder than 26ºC in your grow space? Ideally, you want to be above 20ºC and below 30ºC.

[Fujihiro]

No its always between 24 or 27 maximum.
I just have another opinion and someone told me it could be anthracnose, so i removed the sick leaves and i will apply copper fungicide, i also need to give less water, i have to wait 3 days between watering because the roots received too much water which cause deficiencies.

[ellz]

It could be that but I don't see any holes in the leaves which is a common symptom. Either way, here is some further info on that: https://www.planetnatural.com/pest-p...e/anthracnose/

[Fujihiro]

I had few holes but at the edge of some leaves but it didnt appear on this pics