Phosphorus Issue?

Hey guys, any assistance would be greatly appreciated with this GG Auto. This is my first organic run, so I’m not exactly sure how to handle the issue pictured below. Thanks again in advance!

• ILGM Gorilla Glue Auto
• Method: FFOF, 1lb Nature’s Living Soil, Growers Recharge Weekly
• Vessels: 7G Smart Pot
• PH of Water, Solution, runoff: 5.8-6.7
• PPM/TDS or EC of nutrient solution: N/A - runoff around 2100 PPM
• Indoor or Outdoor: Outdoors through week 5, Indoors week 6(current) moving forward
• Light system: Mars Hydro TS1000 @ 100% brightness 21 inches from top flower
• Temps; Day - 74-78 F, Night - 70-74 F
• Humidity; 35-45%
• Ventilation system; Yes - 4 inch intake/exhaust for 2X2.5 grow tent. 1 clip fan moving air upwards between grow light and top canopy.
• AC, Humidifier, De-humidifier: N/A
• Co2: N/A

Seems to be a Cal deficiency. Are you adding some Cal-Mag? It showed up when she started pre-flowering?

Please wait for experts feedbacks. I am a newbie too.


Looks like a phosphorus issue, or potassium. Some of that is calcium. They’re at all different levels of the canopy it looks like.


Found this on rust spots on leaves

can definitely be calmag

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Perhaps - have not used any Cal-Mag thus far. Yes, it began within the past 7 days or so.

10-4. For the most part, this issue is present on the bottom 70% or so of the plant.

Looks like calcium is needed. CalMag is two things. Calcium and magnesium and I’m not seeing a magnesium issue.
Do you have gypsum?
Dolomite lime?
Egg shells and vinegar?

Natures living soil is supposed to take you through harvest.
I think they have options for photo and auto formulas if I remember correctly. If so how did you set up the pot?
I’ve used it recently and had to add nutrients to correct some issues.
Do you brew any teas? Help with the soil critter population?
How old is she?

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Definitely looks more like calcium the rust spots it may not be that it needs it either if can be in lockout have to determine first