Black lights.

Discussion in 'Lighting' started by pXius, 17 Oct 2011.

  1. pXius

    pXius

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    Now we know how awesome corals look under black light but their affects differ from one forum to another.

    What I could establish is that they are NOT harmful to corals givin you're using normal fluorescent tubes (36w etc/1200mm) etc. These have UV-B light levels which are a bit more intense than UV-A levels of actanics. (UV-C is sterilization grade) However some guys argue that the spectrum is much more visible to fish and invert eyes vs us humans, meaning it could blind them.

    I've read some posts about aquariums using them as moon lights without ill effects. Personally I'm looking for a type of black light/uv/led torch so I can "spot view" some corals without exposing other LS to the light.

    What are your thoughts on the use of black light in the marine world?
     
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  3. dallasg

    dallasg Moderator MASA Contributor

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    why use blue? livestock can still see it, red would be the better option
     
  4. pXius

    pXius Thread Starter

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    I've got blue,

    Black allows you to see coral colours you can't even see in blue.

    For example [ame="http://www.flickr.com/photos/25357178@N06/6006962807/lightbox/"]Crochet Jelly Brain Coral - Black Light Glow | Flickr - Photo Sharing!@@AMEPARAM@@http://farm7.static.flickr.com/6015/6006962807_1186cc7172_m.jpg@@AMEPARAM@@6006962807@@AMEPARAM@@1186cc7172[/ame]

    The point is to specifically look at coral colours after lights out.
     
  5. danimal

    danimal

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    im amped to get some!
     
  6. Dlaria

    Dlaria

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    Those are crochet corals. lol. Thought they were real at first. :p
     
  7. pXius

    pXius Thread Starter

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    But still, pinks turn dark read, some brains turn up black and orange, I'll post some pics from my own tank tonight.
     
  8. pXius

    pXius Thread Starter

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    [​IMG]

    [​IMG]

    [​IMG]

    (these aren't mine)
     
  9. 459b

    459b Moderator MASA Contributor

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    Black light inhibits photosynthesis. Although it does look amazing, running them for too long will have a negative effect on your corals.
     
  10. dallasg

    dallasg Moderator MASA Contributor

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    they run at about 365nm i think, which is not so good long tern
     
  11. Dane

    Dane

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    Yeah I've researched this in the past and photoinhibition is the main reason its not pursued.

    Also, it really doesn't look all that fantastic. I have a tiny little 8w T5 that I used right up close to corals and they fluoresced far less than with a decent actinic.
     
  12. pXius

    pXius Thread Starter

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    Please understand that the idea is not to install black lights, only to occasionally gaze at colours we don't see under actanics, and maybe take a few pics of course.
     
  13. Dane

    Dane

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    Then I believe you can get a blacklight/UV led adaptor for a maglight. Not easy to get a hold of tho. My entomology professor had one for hunting scorpions (they glow in UV), but he had to import it.
     
  14. Dane

    Dane

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    google provided me with this: UV Equip Products

    They seem to have a few UV flashlights.

    and: UV LED Torch

    From my experience with using the little T5, vs a single LED would be go with the LED. Its a more concentrated spot over a smaller area, so much more intense, brighter colours.
     
    Last edited: 17 Oct 2011
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  15. pXius

    pXius Thread Starter

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    Sweet thanks Dane! I see they have a 365nm wavelength one, going to give that a shot! :D
     
  16. Marine1

    Marine1

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    Go to builders they have torches with red lights, energizer type that fit on your head.
    Tried it and amazing. R89.95
     
  17. pXius

    pXius Thread Starter

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    Guys understand this is not to view tank nightlife, its specifically to bring out colours not visible under the normal spectrum ranges we use. :p
     
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