ILGM Super Skunk auto flower
57 days veg on 60 days flowering today
Use ILGM Nutrient package following schedule at 50% every Sunday. This past Sunday I went down to 25% due to leaf tip burn.
Water tap water bubbled 24hrs. No ph tester yet to test pH.
I’m colorblind so I’m lost on what I’m seeing to begin with. I thought either too much nutrients or root rot. Or is it just the end of life cycle as they are maybe two weeks maybe 3 from harvest. Hairs are just now losing moisture. The leaf tip burn is on most leaves. The discoloration is mainly on the sucker leaves so far.
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A whole plant picture helps. My first thoughts are PH or calcium. Showing signs of mag deficiency. Calcium and mag will go hand in hand. Ph imbalance will start that lockout.
Mild painted nails are just fine. Some of us shoot for that. On the edge of too much. We ride that line.
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@Storm ya kinda have seen that in the videos and information I find. Being colorblind it’s hard to see the right picture. So to speak. im barely moist two three inches down so should be good there. Also something about that particular stalk it started budding earlier than the rest and really filled out nicely. About the size of two golf balls stacked on top of each other. It’s a mid level stalk.
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I’m with storm…
Probably needs cal and mag…
Give her w good feeding with some cal and mag…
Should help her out…
Happy growing…
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Cal/mag deficiency usually is the culprit with rust spots on leaves agree with everyone happy growing my friend
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@Reed71 ok thanks for the input. I’ll see what I can find for that.
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@ScottsBuds thanks for the input. Ya I haven’t added anything other than the NPK fertilizer. Will search some out.
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You look Gucci. Far enough into flower that you will finish unless you just kill it. Leaf damage is done. The mag part will fill back in. The calcium spots will stop but damage still there. No more leaves coming. Keep them ALL now unless it fades or browns out totally. Once we nail down the issue whether PH or just light on cal/mag we will watch the tops of the flowers for fresh healthy growth. Just my thoughts and procedures.
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If you recently increased your lighting intensity some strains will need additional calcium 
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Thanks! @Storm
I’m waiting for a pH meter from a friend when he gets off work. I hope. although I did amend some calcium and magnesium through the form of garden lime. A couple tablespoons to the large plant and a tablespoon to the smaller plant that is a week or two behind the first. I couldn’t find a meter or any calmag anywhere in town. Small towns…
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Solid numbers. Should do the trick.
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keep that ph straight and this is a 1 and done for a month ammend.
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I would say a touch of calcium. That is generally quite common in my grows week 4 or 5 of flower.
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I’d wait on that ph meter before trying to correct anything.
If ph is not right then even if there’s lots of calcium in the soil, that calcium want be available to the plant, and adding to much could make things worse.
Maintaining the proper pH balance is crucial for cannabis plants to absorb essential nutrients, including calcium (Ca), which plays a key role in cell wall development, root structure, and overall plant health.
- pH Balance & Nutrient Uptake
The optimal pH range for cannabis depends on the growing medium:
Soil: 6.0 – 6.8
Hydroponics/Coco Coir: 5.5 – 6.2
If pH drifts outside these ranges, nutrient lockout can occur, preventing the plant from absorbing key minerals like calcium, leading to deficiencies.
- Role of Calcium in Cannabis Growth
Calcium is essential for:
Cell wall strength → Promotes sturdy stems and resistance to pests/disease.
Root development → Supports strong root systems for nutrient uptake.
Nutrient transport → Assists in the movement of nutrients throughout the plant.
Prevention of tip burn & leaf curling → Calcium helps regulate transpiration.
- Signs of Calcium Deficiency
New growth distortion (twisted or stunted leaves).
Brown spots & necrosis on leaves, especially in new growth.
Weak stems prone to breaking.
Slow root development, leading to poor nutrient uptake.
- Causes of Calcium Deficiency
Low pH: If pH is below 6.0 (soil) or 5.5 (hydro), calcium becomes unavailable.
Soft or filtered water: Low calcium levels due to lack of dissolved minerals.
Excess potassium or magnesium: Too much K or Mg can block Ca uptake.
High humidity: Reduces transpiration, slowing calcium transport.
- How to Fix & Prevent Calcium Deficiency
Maintain proper pH levels using a pH meter and adjust with pH up/down solutions.
Use calcium-rich amendments like:
Dolomite lime (for soil, raises pH gradually).
Gypsum (adds calcium without affecting pH).
Cal-Mag supplements (for hydro/coco or if using RO water).
Ensure good air circulation to support transpiration and nutrient movement.
Avoid nutrient imbalances, especially excess potassium or magnesium.
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@1HappyPappy
Wow. Thank you for that information! I screenshot it for easy reference now. Ya, well, unfortunately my friend doesn’t have a pen anymore. I did do a soil test. Kinda junky and being colorblind doesn’t help me on the scales. Although it seems my soil pH is around 7.5. give or take. with adding some lime a couple days ago, it will bring it up a bit more gradually. If the soil test is correct. I might go up to the local hardware store and see if they have anything for soil testing. I don’t feel I get a good reading only testing the top soil. I grow in 5 gallon buckets with holes drilled in the bottom for drainage. Hopefully they have a pH soil meter at the store I can credit. Humidity barely reaches 50 percent at its best so no issues there. If anything low humidity. As I struggle to keep it up. Usually runs about 35%.