Potassium Deficiency maybe anything is appreciated

Anyone able to help out?? ! 20210812_160832|375x500

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Looks more like a nitrogen deficiency. Fill out a support ticket.

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:

  • What strain, Gdp And Sunset Sherbert
  • Method: Soil with nector for the gods nutes
  • Vessels: Pots, rain science 5gal
  • PH of Water, under 7.0 trying to bring my ph up in the media
  • PPM/TDS or EC of nutrient solution if applicable 700ppm of nute solution fully mixed
  • Indoor
  • Ligh system, 600rspec
  • Temps; Day, Night 80,75 day 68 Nights
  • Humidity; Day, Night 73 currently if left open but closed tent roughly 80s 90s
  • Ventilation system; Yes, 6in
  • AC, Humidifier, De-humidifier,
  • Co2; Yes and No
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What’s the actual ph of the soil?
What’s the run off PPMs?
Have a picture of the full plant?
Light off with camera flash?

I’d guess magnesium and phosphorous.


Nitrogen and possibly phosphorus but you need to find out why… first thing I would do is test the ph of the soil…


Thats My soil slurry today man




@Myfriendis410 @Budz @AfgVet @dbrn32 @Nicky @OlyBoy98503 @yoshi @Hellraiser @PurpNGold74 @imSICKkid

I’d guess…
Nitrogen(for the lighter colored plants) Potassium phosphorus magnesium calcium

Those are low PPMs for flower and your ph at 7 isn’t doing you any favors.

How close is your light?

Those PPMs look like they are starving. how often are you feeding?
I’d do a full feed with a ph of around 6.3. Ideal ph in soil aim for 6.5. Pull all affected leaves and track the spread.

Usually you want to keep the PPMs going out 12-1400 some go as far as 2000 mid to late flower… until the last 10 days or so of flower, but everyone handles the ending differently. this also of course depends on the scale your reading in… 500, 700?


Concur. Plants are starving in general. Why are you doing so many tests? To this day I’ve only ever done one actual slurry test, in my first grow because there was issue. I think a lot of new growers cause more problems over monitoring than they would have if they didn’t monitor it at all.

That’s why aPotforPot and/or foxfarms, ect… exist. They make fool proof systems if you just simply follow their instructions.


I’ve been watering at 7.0 6.9 to bring my ph up 2 weeks ago my soils where all like 5.0 ph haven’t been feeding cause of that my lights like 30in or so maybe less or more depending on what plant I guess…what scale you mean im reading in?? @Low but honestly ill give it a try less micro management in the grow room! @Budz

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What food? Your pH is dropping because of a lack. I know someone better at explaining this than I. @Myfriendis410

Whoops. I just double tagged him. My bad. Since @Low did when he tagged me. Lol.

Regardless. Your plants need more food…


Im Useing Nector for The Gods basically full Line minus couple bottles @Budz

I’m not familiar with the line. But those that are will be able to help more if you’re specific to what you are using and or arent/don’t have. Because you either need more of basically everything or you have a pH issue. To put it simply. They are hungry af…


This kind of issue shouldn’t be made harder than it has to be.

There’s your answer. Great poster (by the way).

Yup. Feed them!

Learn to read your plants and your plants will tell you everything they want you to know about how they are doing. @Zee You Grok?


My first thought looking at the picture, basically the plant is hungry need to pick up the NPK also your numbers you have posted supports that. I would also add a little cal-mag . Good luck


This is so I have a better understanding. @kellydans @Budz @OlyBoy98503 @Low @Deepsix
I am a little confused regarding the conclusion it is primarily related to NPK deficiencies due to under feeding. If this is the case I would think the lower leaves would show more evidence of deficiencies. NPK are mobile nutrients and will transport to sustain new grown. I see more deficiencies in the upper leaves leading me to think it is more related to uptake of immobile nutrients. Which in turn is often the result of pH swings or pH that is either too high or low.
There are lots of tables out there summarizing impact. This one is easy for me to follow /make sense of

I ask this because I have been experiencing similar issues with a couple of plants. In one case I was able to save the plants and get them to a decent harvest. In another, my reaction was inadequate and much too late and I had to harvest 2 - 3 weeks early.
If interested you can see them at the end of Let’s Grow Some Purple Kush


Everyone has their own way as always. When I look at leaf issues my first question is age of plant, because the requirements change. Altho jacks is an amazing beginning to end system. Only issue I ever had with RB’s was when I used too much.


Sorry not catching RB’s?

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