Removing MH UV shield

Discussion in 'Lighting' started by Mekaeel, 11 Jul 2007.

  1. Mekaeel

    Mekaeel Moderator MASA Contributor

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    hi there crew.what are the disadvantages of removing the UV glass/shield from my 150W DE MH fittings other than water messing it up.
    thanks
     
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  3. Alan

    Alan Admin MASA Contributor

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    Mekaeel i tried this, and i seriously do not recommend it. I sent most of my live stock into light shock and seriously burnt some of my corals with in half an hour. Rather look at ways of improving the reflectors in the fittings.
     
  4. Mekaeel

    Mekaeel Thread Starter Moderator MASA Contributor

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    thanks alan.in the standard 150W DE reflectors,is there any way to modify the reflectors?
     
  5. phat

    phat

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    by standard you mean downlighter?
     
  6. Mekaeel

    Mekaeel Thread Starter Moderator MASA Contributor

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    mmmh,not too sure lemme check for a pic somewhere
     
  7. phat

    phat

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    if it is dude dont waste your time, either build or buy a decent reflector
     
  8. Mekaeel

    Mekaeel Thread Starter Moderator MASA Contributor

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    hang on im still looking for a pic
     
  9. Alan

    Alan Admin MASA Contributor

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    No way to modify the reflector, easy enough to make one.
     
  10. Mekaeel

    Mekaeel Thread Starter Moderator MASA Contributor

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    its like this

    [​IMG]
     
  11. Mekaeel

    Mekaeel Thread Starter Moderator MASA Contributor

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    do you mean leave the original fitting alan and cover it with something sparkly?
     
  12. phat

    phat

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    yeah thats the downlighter made to be used in shop windows!!
     
  13. Alan

    Alan Admin MASA Contributor

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    Leave the original fitting and change the reflector inside.
     
  14. Mekaeel

    Mekaeel Thread Starter Moderator MASA Contributor

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    cool.now where can i get some nice reflectors from?
     
  15. Mekaeel

    Mekaeel Thread Starter Moderator MASA Contributor

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    damn shop windows.makes my lighting sound very cheap
     
  16. Alan

    Alan Admin MASA Contributor

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    Same fittings i use, i managed to find reflector material and then made my own.
     
  17. Mekaeel

    Mekaeel Thread Starter Moderator MASA Contributor

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    from where alan?
     
  18. Alan

    Alan Admin MASA Contributor

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    I managed to get from my wholesaler, will check if i have any left.
     
  19. viper357

    viper357 Admin MASA Contributor

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    But what if the MH's are already UV shielded like the Ventures, you can run those without the glass, it's the ones like BLV that do not have built in UV shielding. I think.
     
  20. Bob the (reef)builder

    Bob the (reef)builder

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    I'm fairly sure that all double ended bulbs need protection, and single ended, for some reason are protected.

    All SE bulbs I've ever used have been fine with no glass, but on the one occasion that the glass broke it fried the tanks occupants, even the LR went grey.
     
  21. Alan

    Alan Admin MASA Contributor

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    Dean i dont know about the built in UV shield, i think it may have a alot to do with the par ratings.
     
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