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    Default help! sick autoflower seedling

    Hi All!

    i have a sick seedling as mentioned in the title, its had a rough time, due to my incompetence or a bum seed, i'm not sure. I germinated 4 other seeds of this strain & none popped except this. I've been experimenting a bit, as you'll see below, i've tried a few things & tbh i'm just trying to make sure i'm on the right path now.

    i spoke to the guys who rep'd the seeds & they've been really good about it.

    quick summarry, popped all of the plants in the pics in RO water, abt 12-24 hrs then to damp paper towel for +- another 24hrs. kept dark & at 26deg C & abt 65 % rel hum. other 2 plants in pics are an unknown sativa & an indica (judging by leaves - may be hybrids), sharing the same enviroment & loving life so far, started 2 weeks before the auto so i had plants to "practice" LST & HST on.

    from day one its been slow, slow out the shell, slow to form a proper tap root, put into coco str8 from paper towel, PH'd 5.8 water with a small amount of Mg & Ca less than 100ppm. blah blah blah as below template.

    (see the potatoes in the pots? testing for fungus gnats - caught a few flying around my plants, on sticky pads) have also had a very light spider mite problem, which (fingers crossed i've gotten rid of) i used 3 doses of pyrithrum via foliar spray, started 10ml/1l then 15 for the 2nd spray & 20ml for the 3rd over about 9 days - this may have made contact with the leaves of the seedling, i also used a foliar feed @ about a 1/4 mix which may have hit the seedling - i also used this to microdose the coco for the seeling (less than 2 ml every 3 days)

    i gave it a 1st feed of 1/4 strength with a bit more calmag, then i flushed the medium about a week ago when i saw the first signs of nute burn, gave it about 4 days then gave it a light feeding with a bit more calmag & the new growth seems fine, but i'm still worried that it hasnt quite spread to the upper leaves yet.

    i keep the lights between 10-15cm above the plants, its a closet grow & i dont really want to go splash out on a shit load of equipment until i decide if i want carry on with growing, so i dont have a huge amount of control over the enviro but specs below.

    please help!

    Soil or hydro or coco: coco

    Strain: kush n cheese auto feminized

    Photo or Auto: auto

    plant age: +- 18 days

    pot size: +- 500ml

    has it been repotted? and when?: no

    nutes or additives used and how often for soil: nutriplex hydroponics , 300ppm, 1.2 ec, 5.8ph RO water

    Air temps (max min): 30deg C Max 22 deg min

    Res temps (max min): ??? water temp? room temp as above

    humidity: (unknown at canopy level - between 30 & 80%

    lighting type and wattage (hps, led, cfl): CFL 2x 125W

    Light schedule: 20-4

    ph level: 5.8

    EC (hydro and coco only): 1.2

    Background EC.

    feed schedule and nutes (for hydro and coco) : feed when pot is dry abt an inch down & or when pot feels light
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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