phosphorus deficiency

  1. PurpleThai

    Phosphorus deficiency and incorrigible pH

    Hi! I'm having problems with these plants (different genetics, same problem), and I don't know what to do anymore, I hope to get some help from someone better than me. My plants are showing something I think is a severe phosphorus deficiency with purple branches: 2 months ago I bought a cheap...
  2. H

    Chemdawg - deficiency question???

    Does anyone have experience growing chemdawg? And if so what are the nutrient requirements bc I can not seem for the life of me to get rid of either a calcium/magnesium deficiency or a phosphorous deficiency? And how heavy in ml/gallon should I be feeding them these particular nutes? Bc I upped...
  3. S

    Possible phosphorus deficiency? Pls help diagnosing!

    Hey folks, Here's the situation: I have 4 plants growing outdoors here in South Africa. 3-4 weeks into flower. All the plants are generally in good health but lower fan leaves are progressively yellowing and falling off as expected some faster some slower. One plant though is showing signs of a...
  4. B

    Second grow, same issue

    Hey fellow growers, I'm on my second grow here and I'm facing the same issue as before.. Ghetto setup: - Bagseed - Small DIY growbox with reflective bubble wrap inside - 2 x 23W 6400K CFL's + 1 x 45W 6400K UFO LED - 2 x PC fans (inlet+outlet) - Store bought high-quality universal and organic...
  5. G

    Is this phosphorus deficiency?

    I had cold temp problems, which i resolved 3 days ago. My guess is it caused phosphorus deficiency in plants. Also, my temps during lights on is 24-25 celsius and 19-23 should i lower night time temps? Any ideas how? Temps outside the tent is constantly 8-9 celsius
  6. PlainfieldPuff

    Help Please! Things going south quickly .

    Specs : Day 17 flower. 3x3 tent, 75-80degrees, 45-60 Rh depending on when I watered. Soil I am using is Roots Organic. 400watts LED, 2x SF2000. Taller Girls are about 12-15 inches from light . Supercropped them down tho to make even with rest of canopy, and lowered light to 80% intensity. So I...
  7. Alctrz8849

    Phosphorus deficiency but high PPM

    I have some plants that are 9 weeks old that seem to be extremely vigorous in their nutrient needs. I record the PPM and the PH daily and have done some deep dives on this and everything I find is confirming that this is a phosphorus deficiency as I have some purpling of the stems, bluing of the...
  8. J

    Can't escape the rust spots on leaves!

    I am mid week 3 of veg and rust spots have been haunting me since week 1 and I tried nearly everything. A quick background on my setup: First time DWC/Autoflower strain Flora Trio GH 1/2 teaspoon/g all 3 first 2 weeks (1 teaspoon/g cal-mag) Increased to 1 full teaspoon/g beggining of week 3 (1...
  9. V

    Leaves turning purple in onset of week 6 flowering

    Hi all, I have this Gelato OG in week 6 of flowring that started showing purple leaves. Does this mean phosphorous deficiency? This plant was very short and very bushy with too many small flowers and too many branches. I think it is phosphorous deficiency so i cut alot of the small branches...
  10. S

    Need help diagnosing

    I have a few plants that I am concerned about. 1 - Out of 4, one seems to be just fine...so far.... 2 - One of them has twisting leaves and skinny leaves where there is new growth, which might just be normal for this plant, not sure. 3&4 - The other two have similar issues, they both have...
  11. Dabdaddi902

    Recycled Super Soil. Top Cola fan leaves browning and drying up. PLZ HELP!

    So this is the first time i've reused my super soil mix. The super soil I used has basically enough nutrients in the soil to last one cycle, after that you have to re-amend. I'm currently in week 5 of flower and all of my plants are showing signs of stress, with one plant showing severe signs...
  12. kuruth

    Can't seem to get it right

    New grower. One full harvest under my belt, and a second one soon. Problem with my veg plants that 4x blue cookies from seed 2x4 closet currently in 3 gallon fabric pots Canna Coco+Perlite Canna A+ Canna B+ Cal-mag PH ~5.8 room temp ~24 Celsius/77 Fahrenheit RH ~65 I planted these "Blue...
  13. Gabarram

    Can it be just genetics, too bright lights, too cold in the long night, or a phosphorus deficiency?

    Hello people Look, I grow 5 White Widow plants and one plant of unknown origin (derived from a regular, non feminized seed of another previous crop of mine, i call it a bastard plant) which suddenly started to show a pigmentation on the leaves, that has turned some leaves purplish brown...
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