Metal halide bleach

Discussion in 'Lighting' started by traddle, 8 Aug 2008.

  1. traddle

    traddle

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    I have seen after is started my new system up that my live rock is bleaching a little, i.e my coralline algae seems to be dying off :-( ??

    is it because my lighting is too intense ?? i have a hex nano so it is quite deep running with a 150W metal halide ?? the bulb rating is at 10000 K

    Thanks
     
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  3. viper357

    viper357 Admin MASA Contributor

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    Could possibly be the light, it might also be your calcium or alkalinity levels have dropped.
     
  4. Mekaeel

    Mekaeel Moderator MASA Contributor

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    Sounds normal.Coralline algea will bleach once moved to different (more intense) lighting conditions.
    As Viper said,can also be you Ca and Alk levels.
     
  5. traddle

    traddle Thread Starter

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    i checked my ph and its fine at 8.2 ??

    thought the calcium would be fine cause i put new RO water in ?? started the system up three days ago ?? shouldnt the calcium be ok ??

    I thought of another thing, I DIY'ed the light, it is a double sided bulb but doesnt have the tampered glass covering it ?? will that make difference ??
     
  6. jacquesb

    jacquesb Retired Moderator

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    Or perhaps phosphate levels that have increased....
     
  7. Mekaeel

    Mekaeel Moderator MASA Contributor

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    You have to check calcium levels just to make sure.

    With a DE globe,you will burn your corals and LR should there be no UV shield.Please fit one on ASAP.
     
  8. viper357

    viper357 Admin MASA Contributor

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    Yip, Mekaeel is right, you need to cover that bulb with a piece of glass or everything in your tank will die.
     
  9. traddle

    traddle Thread Starter

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    Damn think you right man ?? makes more sense now :) ill sort it out 2nite ? this is what i have done with the lighting

    [​IMG]

    [​IMG]
     
  10. traddle

    traddle Thread Starter

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    thanks :)
     
  11. Mekaeel

    Mekaeel Moderator MASA Contributor

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    In the mean time have the light off.
    The only double ended bulb i found safe to use without a UV shield is the Venture bulbs.
     
  12. traddle

    traddle Thread Starter

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    cool will do :) i am work now but will call the maid to switch it off for me :-( hope its not permanent ????

    Damn i feel dumb now :-( well you live you learn :)
     
  13. viper357

    viper357 Admin MASA Contributor

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    I did something very similar to my MH, but you have to put the glass shield back on. Don't worry, I also learned the hard way, I was cleaning my MH's one day and forgot to put one of the glass pieces back on, needless to say everything on that side of the tank died within a few days until I figured out what was wrong.
     
  14. traddle

    traddle Thread Starter

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    just figured out why I had the huge algae out break which made me restart my system :-( was all my stuff dying and putting phosphates into the water and helping the algae to go wild ??

    Thanks for the help :) MASA ROCKS !!!!! :yeahdude::slayer:
     
  15. lanzo

    lanzo Sponsor

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    did you have your rocks out of the water for a long time?
    Coraline algae will die if its out of the water for a long time, but will grow back?

    Dont know much about the cover glass, but if the gurus say so, why not try it:thumbup:

    But do check your ca and alk when your back from work
     
  16. traddle

    traddle Thread Starter

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    shot will do :) got funny feelin its the glass cover ey ?? the rocks where out of the water for like 10 mins max when i did the transfer from geoffs sump.
     
  17. lanzo

    lanzo Sponsor

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    no 10min wont cause them to go white
     
  18. traddle

    traddle Thread Starter

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    well i added the tempered glass and hope it is gonna do the trick this is my DIY job ?? any suggestions ??

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]
     
  19. traddle

    traddle Thread Starter

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    oh and its tilted so that the light refracts back onto the rock when the lid is closed cause the halide sits a bit forward rather than dead centre when lid is closed
     
  20. viper357

    viper357 Admin MASA Contributor

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    Looks good to me.
     
  21. Mekaeel

    Mekaeel Moderator MASA Contributor

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    Now you are set to run the halide :)
     
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