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High Soil PH and leaves deficiencies

Discussion in 'Sick Plants and Problems' started by charlieplaza, Oct 22, 2011.

  1. Plants: 1 x Cream Caramel (auto-flowering) & 1 x Pineapple Express (auto-flowering)
    Life span: 44 days since sprout, 4 weeks into flowering: Hopefully will live until 62-63 days.
    Temperature: 23º-29º C (73-84ºF)
    Average humidity: Veg 55% - Flowering 35%
    Watering: every 2 days
    Lamps: 250w CFL (dual spectrum) + 2 neon tubes 55w (dual spectrum).
    Total light: 360w dual spectre (180w 2700ºK + 180w 6400ºK)
    Soil: Canna Terra Professional Plus+ (with Perlite mixed in)
    Nutes: GHE Biothrive Grow + Bloom
    Feeding: 1 time every week, 2ml per liter of water.

    Hey guys, my plants are looking pretty bad with yellow and brown leaves from bottom to the top. One of them also has some brown colors in the border of new growth and brown spots in older leaves.

    I guess it's a deficiency of some sort... I read it could be a lockout because of high soil PH, since the runoff is always at 7 (or higher) when watering at PH 6.5.
    I tried to lower the soil PH with water at 5.9 (using PH Down) but PH won't go lower than 7 anyway.

    This morning I flushed the plants using PH'd water to 6.0 and the initial runoff came out at 6.2 (so I assument the soil PH was good around 6.4) but several hours later I checked the late runoff and again it was over 7 (so the soil PH must be well over 7). I also flushed 3 weeks ago because fan leaves started showing yellow spots and the flush solved the problem, so I'm hoping it will help this time but I have the feeling that flushing every 2 weeks is not ideal.

    Is the deficiency caused by salt build up locking out nutrients? Am I not giving them enough food? What would you recommend? I really hope my plants will reach 62-63 days before harvest but it looks like they won't make it to 50 days

    On a side note, as a bonus, I must say that half of the pistils are orange already, and the trichomes are ALL milky/cloudy. It's like if the plants were ready to be harvested but they are only 44 days old from sprout! Isn't it way too early even for autos?

    [​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG]

    Hope you guys can help, as it's my first grow and even tho I read a lot I don't know how to help them Thanks in advance.
     
  2. I pulled my first indoor crop too early, don't make that mistake. I haven't grown an auto before though so take my advice w/a grain of salt. The trichs colors are important but you'll see a marked difference in the plant as a whole. Yellowing lower leaves due to her sucking the last of the nitro, the white hairs should recede back into the flower and possibly back out again before pulling. You'll figure this out within 1 or 2 grows and I believe that unintentionally pulling early was a good lesson for me. How else will you know when its the perfect time if you havent tested the early and late side of harvesting time. Forget what the breeder says!
    [QWatering: every 2 days
    Lamps: 250w CFL (dual spectrum) + 2 neon tubes 55w (dual spectrum).
    Total light: 360w dual spectre (180w 2700ºK + 180w 6400ºK)
    Soil: Canna Terra Professional Plus+ (with Perlite mixed in)
    Nutes: GHE Biothrive Grow + Bloom
    Feeding: 1 time every week, 2ml per liter of water.

    Hey guys, my plants are looking pretty bad with yellow and brown leaves from bottom to the top. One of them also has some brown colors in the border of new growth and brown spots in older leaves.

    I guess it's a deficiency of some sort... I read it could be a lockout because of high soil PH, since the runoff is always at 7 (or higher) when watering at PH 6.5.
    I tried to lower the soil PH with water at 5.9 (using PH Down) but PH won't go lower than 7 anyway.

    This morning I flushed the plants using PH'd water to 6.0 and the initial runoff came out at 6.2 (so I assument the soil PH was good around 6.4) but several hours later I checked the late runoff and again it was over 7 (so the soil PH must be well over 7). I also flushed 3 weeks ago because fan leaves started showing yellow spots and the flush solved the problem, so I'm hoping it will help this time but I have the feeling that flushing every 2 weeks is not ideal.

    Is the deficiency caused by salt build up locking out nutrients? Am I not giving them enough food? What would you recommend? I really hope my plants will reach 62-63 days before harvest but it looks like they won't make it to 50 days

    On a side note, as a bonus, I must say that half of the pistils are orange already, and the trichomes are ALL milky/cloudy. It's like if the plants were ready to be harvested but they are only 44 days old from sprout! Isn't it way too early even for autos?

    [​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG]

    Hope you guys can help, as it's my first grow and even tho I read a lot I don't know how to help them Thanks in advance.[/QUOTE]
     
  3. thanks growlites, I finally harvested at day 65 since germination & stopped the nutes 11 days before.
     

    Attached Files:

  4. your finished product looks quite frosty.

    i am sorry nobody replied to your thread to help a few weeks ago. if i would have seen this one, we woulda figured it out :)

    if you have any other problems dont hesitate!
     

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