Brown spots on sour diesel

Strain; Sour Diesel

Soil in pots.

Using Dr. Earth fertilizer

Indoor or Outdoor
Light system, size? Indoor, 5g pot, lights 2-3 feet above plant

Temps; Day, Night. Temps in home, about 70 during day and 66 at night.

Humidity; low humidity, now using dehumidifier

Ventilation system; No

Plant did great until leaves turned a little yellow. I treated with an epsom salt mixture because there was a magnesium deficiency. I believe it has a potassium deficiency
now, and have been using Dr. Earth and banana peel water, but just seems to be getting worse.


Please dont start another one, this is the third one you have posted.
Stick with this thread.
They look hungry, but could be from something out of range.
Fill out this support ticket and we can troubleshoot the issue.
It has a few questions not answered in the original post.
Welcome to the forum too.

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 (photo or auto)
-Age of plant
-Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF
-Vessels: Type and capacity of container (fabric, plastic, etc)
-PH and TDS of Water, Solution, runoff (if Applicable)
-PPM/TDS or EC of nutrient solution if applicable
-Method used to measure PH and TDS
-Indoor or Outdoor if indoor, size of grow space
-Light system List brand and wattage/spectrum
-Actual wattage draw of lights
-Current Light Schedule
-Temps; Day, Night
-Humidity; Day, Night
-Ventilation system; Yes, No, Size
-AC, Humidifier, De-humidifier,

Sorry! Very new to this forum

What strain, Seed bank, or bag seed (photo or auto) - sour diesel
-Age of plant - 3 months
-Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF - organic potting soil
-Vessels: Type and capacity of container (fabric, plastic, etc) - 5g plastic pot, well draining
-PH and TDS of Water, Solution, runoff (if Applicable). Current pH is 7
-PPM/TDS or EC of nutrient solution if applicable. Unknown
-Method used to measure PH and TDS - pH meter used
-Indoor or Outdoor if indoor, size of grow space- indoor, plant currently has 2x2 space
-Light system List brand and wattage/spectrum. 4 t5, 2 LED (24w) and 3 purple lights
-Actual wattage draw of lights - unknown
-Current Light Schedule - 18/6
-Temps; Day, Night - 70 day, 65 night
-Humidity; Day, Night - low
-Ventilation system; Yes, No, Size- no
-AC, Humidifier, De-humidifier, - current dehumidifier to use banana water more frequently

Not a problem. It will save you jumping around and answering the same questions a hundred times. There are a few of us that watch the new posts to help out, but sometimes it takes a bit. This thread is perfect.

Cannabis likes a slightly acidic soil, so watering should be in the 6.5 to 6.8 range.
What brand of soil? And what particular one since some companies make several versions.

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I no longer have the bag, but I believe it was a miracle gro garden/vegetable soil

Miracle grow and cannabis are not friends. The time release nutrients are not correct for cannabis. There are some growers here who have figured out how to use it. Some individual plants will tolerate it. Do you know how to test runoff? Just capture the water that runs out the bottom and check its pH and PPMs.

And I can almost guarantee that meter is off on the pH reading if thats what you are using.
No worries bro, I made all these same mistakes too. If you are serious about growing, this is where you will learn…


I can get a better pH meter and measure the run off.
Any tips for lower the pH so I don’t lose the plant? Or is it lost at this point?


I dont ever give up.
This is a good balance between quality and price.
If you have any distilled water just use that until you get the meter.
It wont change the soil pH which should be neutral or close.


Update, pH is 5.4. I did a good flish with distilled water and some more banana water

Hi there. 5.4 too low for soil. Get some ph up and down. Use only a few drops and check again. Keep ph 6.5 ish. What fert will you be using if runoff numbers are off? Jacks 321 is cheap and easy to use if u follow schedule. In future get cannibis friendly soil. This is an addictive hobby, but sooo worth it.

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