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Severe Heat Damage...

Discussion in 'Sick Plants and Problems' started by grassgoon, Jan 27, 2007.

  1. #1 grassgoon, Jan 27, 2007
    Hi everyone, this is my first posting and I'm in deep s**t. I hope someone can help.

    I have started growing my own. I germinated four seeds and one turned out to be a female. After separating the female and putting it in a wardrobe (closet) with a set of four warm florescent lights on a 12/12 timer the female stared to flower nicely with many budding sites. Two weeks into flowering I decided to upgrade my setup to include a single 250W sodium for maximum yield. I set up the new light 30-40cm from the top of the plant, and attached a computer fan directed at the light to shift any build-up of hot air<O:p</O:p
    <O:p
    Unfortunately the weener of a fan wasn't powerful enough...<O:p
    <O:p
    After only 2 1/2 / 3 hours of the new light being on I returned to the wardrobe to find --to my horror-- that all of the large and most of the medium sized leaves had curled-up, gone crispy and died.:(

    Totally Toasted.

    <O:p<O:p
    This was last night.
    <O:p
    <O:p
    Can the plant be salvaged or is it now doomed to die?
    <O:p
    <O:p
    PS <O:p
    I realize now (way too late) that the light should be at least 60cm away from the top of the plant and that there should be effective ventilation in the form of extractor fans for enclosed spaces. <O:p
     
  2. #2 BrazyJay, Jan 27, 2007
    it should be fine, keep it at 60cm for a week, then u can lower it to 30-40cm, as long as the temps arent too high. It wasnt really the heat that did it, if u had a fan on it, but more the intensity of the light, switching from CFLs to an hps, and yes u need an exhaust fan
     
  3. #3 grassgoon, Jan 27, 2007
    Thanks B, so you think it was the shock of switching lights which may have caused this? I didn't think it was heat damage as it was only on for 2 hours, it's only a 250w light, and I didn't get a massive surge of heat when i opened the doors, but the effects seemed so severe for just light damage!

    You've put my mind at rest B, thanx.

    Will this set back the harvest time at all do you think? Will the plant now regenerate the large light absorbing leaves?
     
  4. #4 grassgoon, Jan 27, 2007
    BTW does anyone have a link to a decent solution for ventilation in small spaces?
     
  5. #5 DrBudGreengenes, Jan 27, 2007
    How small of a space? whats the room temp we will pull air from? and what is our budget?
     
  6. #6 grassgoon, Jan 27, 2007
    The space meausres about 60x60x200cm (WxLxH), I'm not sure what the grow space temp is the 250W HPS on as I'm in need of a thermometer, and I'd like to spend as little money as poss, no more than about 70 Euros, but i can strech to more if needed.
     
  7. #7 grassgoon, Jan 27, 2007
    Oh, room temp outside grow space is about 16-20c.
     
  8. #8 DataBass, Jan 28, 2007
    Plants have to be "hardened off". Just like when you start a tomato plant indoors. You need to gradually change the climate for them. They'll die if you plant them right away. There's a big difference between cfl's and sodium, both in heat and light intensity. But, you're right, 2 hours doesn't seem very long. I try to start the plants further away, then gradually (over a week) bring them closer to the light. I've found my plants start to wither at about 20c room temp. Last year was real hard when we had about a month of 18c days. I couldn't cool the grow-room more than the house itself.
     
    • Like Like x 1
  9. #9 Jayson420420, May 19, 2015
    I had this same problem. The heat damaged the leaves. Making them curl up & get crispy. I mean it crumbles to the touch. I put so much work into this. It breaks my heart. And it all went down the toilet in just a couple of hours. I am a newb at growing indoors. What sucks is this happened on the first day, of me switching to 12/12 light cycle. I use soil & a 600watt MH. Anyway I put it back into VEG trying to save it. And cut all the crispy ass leaves off her. I hope in a week she will be alright. And fresh leaves will replace them. But I could use some advice. And one more IMPORTANT question: does anyone know how to start a topic on here. Or just ask a question. So many times I needed help & I couldn't ask a question on this site. This site is a pain in the ass to use. Thank god there was a topic with the same problem I had. And I just clicked add comment. But consumer report won't help me. It would be nice to be able to ask people for help. 
     
  10. #10 rain dancer, May 19, 2015
    This thread is 8 years old dude^

    To ask for help you needed to just start a thread or ask in the sick plants thread.

    Yeah, veg will fix a plant that was burned, no problem at all.
    ~ poke
     
  11. #11 waktoo, May 19, 2015
     
    At the top right of every GC sub-forum page, there's a little green box that says "start new topic".
     

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