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Thread: Plants 7 weeks old, fan leaves dying off

  1. #1

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    Default Plants 7 weeks old, fan leaves dying off

    So my 2 Purple haze autoflowers are about 7 weeks old now and ive noticed that since the start of flowering the fan leaves have been slowly dying off, usually some rusty spots appear before then the leaf starts drying up and falling off. Ive just started it on some cowmag using 1ml per 2l of Ph balanced water. Should I carry on with the cow mag or is it a different issue ? ill post some pics so you can tell me what you think



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    fill this in matey, the extra info really helps



    Soil or hydro or coco:

    Strain:

    Photo or Auto:

    plant age:

    pot size:

    has it been repotted? and when?:

    soil type:

    nutes or additives used and how often for soil:

    Air temps (max min):

    Res temps (max min):

    humidity:

    lighting type and wattage (hps, led, cfl):

    Light schedule:

    ph level:

    EC (hydro and coco only)

    Background EC.

    feed schedule and nutes (for hydro and coco)

    anything else you think may be relevant!

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    Soil or hydro or coco: Soil

    Strain: Purple Haze

    Photo or Auto: Autoflower

    plant age: 7 weeks

    pot size: 5L

    has it been repotted? and when?: Repotted at 4 week old Due to rapid growth

    soil type: John innes All purpose

    nutes or additives used and how often for soil: 1ml biobloom and topmax per 1l PH balanced water once every 3 days And recently started using 1ml Vitalink CalMag per 1l water for the 2 days between feeding

    Air temps (max min): 19- 26

    Res temps (max min): 19-23

    humidity: 45%

    lighting type and wattage (hps, led, cfl): 300w LED (141 true wattage)

    Light schedule: 20/4

    ph level:6.8


    The spots on the leaves appear random to and extent with the bottom leaves dying faster. Im completely stumped on what this could be

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    Quote Originally Posted by Acorn View Post
    Soil or hydro or coco: Soil

    Strain: Purple Haze

    Photo or Auto: Autoflower

    plant age: 7 weeks

    pot size: 5L

    has it been repotted? and when?: Repotted at 4 week old Due to rapid growth

    soil type: John innes All purpose

    nutes or additives used and how often for soil: 1ml biobloom and topmax per 1l PH balanced water once every 3 days And recently started using 1ml Vitalink CalMag per 1l water for the 2 days between feeding

    Air temps (max min): 19- 26

    Res temps (max min): 19-23

    humidity: 45%

    lighting type and wattage (hps, led, cfl): 300w LED (141 true wattage)

    Light schedule: 20/4

    ph level:6.8


    The spots on the leaves appear random to and extent with the bottom leaves dying faster. Im completely stumped on what this could be

    Another one falls foul of the Bio-Bizz curse...Bio-Bizz is a two part system you have to use the grow and bloom in conjunction with each other during the flowering phase...The grow contains the micro elements and balances the NPK when used in conjunction with the bloom....Also your running organic nutes that DO NOT require any pH adjustment....Adding to much cal-mag or over frequency of use will cause an imbalance in the medium, the practice of adding this to the feed solution causes more issues than it fixes...Cal-mag is best administered as a foliar feed to avoid complications....Your best bet is to flush the pot with 3 x the volume with plain tap water then get the plant on a proper feed schedule...Oh and your pots a bit on the small side as well, 10 litre would have been better for a more stable balance of the medium...

    Regards BL

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    Quote Originally Posted by Bud Lightyear View Post
    Another one falls foul of the Bio-Bizz curse...Bio-Bizz is a two part system you have to use the grow and bloom in conjunction with each other during the flowering phase...The grow contains the micro elements and balances the NPK when used in conjunction with the bloom....Also your running organic nutes that DO NOT require any pH adjustment....Adding to much cal-mag or over frequency of use will cause an imbalance in the medium, the practice of adding this to the feed solution causes more issues than it fixes...Cal-mag is best administered as a foliar feed to avoid complications....Your best bet is to flush the pot with 3 x the volume with plain tap water then get the plant on a proper feed schedule...Oh and your pots a bit on the small side as well, 10 litre would have been better for a more stable balance of the medium...

    Regards BL
    I forgot to mention its a stealth grow which is the reason for my choice of pot, also what would you recommend for dosage of my nutes ? I was feeding them at the beginning of flowering with grow,bloom and topmax 1ml each so maybe i should just go back to that? anyway thanks for the advice ill flush them both tomorrow and see how we go from there

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