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Thread: Why has my bulb exploded!?

  1. #1

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    Exclamation Answered: Why has my bulb exploded!?

    This is my first ever grow, im 3 weeks in and my 250 watt mh bulb seems to have exploded on the inside leaving a massive bulge on the outer shell!!!

    ive ordered a new one but can someone please tell me why this has happend i cleaned the bulb with a cloth before applying and have pretty much done everything by the book.

    also, ive had to replace it with my 250 watt hps until the new one arrives so ive raised the reflector a few inches and now giving the plant 6 hours of darkness instead of 4. the bottom leaves have already gone almost completely yellow and other leaves are beginning to look crispy on the edges as well..

    please help me?

  2. "You shouldnt use a cloth of any kind you should pull the bulb out a few inches by the fixing and then use the cardboard to screw it into the fitting no need to touch the bulb at all"


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    Quote Originally Posted by Chronic the Hedgehog View Post
    This is my first ever grow, im 3 weeks in and my 250 watt mh bulb seems to have exploded on the inside leaving a massive bulge on the outer shell!!!

    ive ordered a new one but can someone please tell me why this has happend i cleaned the bulb with a cloth before applying and have pretty much done everything by the book.

    also, ive had to replace it with my 250 watt hps until the new one arrives so ive raised the reflector a few inches and now giving the plant 6 hours of darkness instead of 4. the bottom leaves have already gone almost completely yellow and other leaves are beginning to look crispy on the edges as well..

    please help me?
    dont no what could of happend your light, it may have been damage in the post or something.
    there should'nt be any real diffrents with heat from a mh and hps, your leafs going yellow sounds like they need more food.
    you could maybe put up a few pics.
    good luck

  4. #3

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    Could any moisture have reached it ie; from misting your plants? Moisture and HID don't mix
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  5. #4
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    yeah could have been a slight knock on the bulb and the yellowing as LBN says could be lack of nutes..



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    LBN (19-04-12)

  7. #5
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    You shouldnt use a cloth of any kind you should pull the bulb out a few inches by the fixing and then use the cardboard to screw it into the fitting no need to touch the bulb at all

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    Adambomb (19-04-12), babybud3232 (19-04-12), TheDukeof420 (24-04-12)

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    Quote Originally Posted by Icon View Post
    You shouldnt use a cloth of any kind you should pull the bulb out a few inches by the fixing and then use the cardboard to screw it into the fitting no need to touch the bulb at all
    You learn something new everyday

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  11. #7
    nuube Guest

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    Could it be that it thought you were working for the US/UK government and it was a Islamist light?

    Does the ballast match the bulb - 250w bulb but you don't mention the ballast.

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    jobby2812 (19-04-12)

  13. #8
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    Not sure why you have moved it away either the MH is hotter then the HPS w for w so it should be fine where it is

  14. #9

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    I am not sure of the specifics but heard if an HPS bulb breaks, it releases Mercury. Certainly this is in gas form but may also be in liquid/solid form. You may want to use caution and investigate this further?

  15. #10

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    It don't sound good.I clean mine with alchol after I put it in to be safe. Oil what so ever gets on it and that the end of it shortly after you turn it on

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