T5 uv lights.

Discussion in 'Lighting' started by Nella, 8 Feb 2016.

  1. Nella

    Nella

    Joined:
    29 Oct 2011
    Posts:
    309
    Likes Received:
    41
    Location:
    polokwane
    Ok we all know that you can run a uv steriliser. .
    But apparently you also can put an uv light in you're main display lights . Hope you guys understand what I mean.
    I always thought that a uv can damaged you're eyes if you look at it directly. Or is this a total different uv globe all together?
    Also what's the benefit off doing it
     
  2. AdS Guest




    to hide all adverts.
  3. RiaanP

    RiaanP Moderator

    Joined:
    11 Aug 2008
    Posts:
    23,163
    Likes Received:
    1,231
    Location:
    Centurion
    NO NEVER...

    Should have a UV shield. It will damage your eyes. Same as watching somebody arch welding without proper eye protection.

    Unless there is now something new on the market that I never heard about.
     
    Nella likes this.
  4. Nella

    Nella Thread Starter

    Joined:
    29 Oct 2011
    Posts:
    309
    Likes Received:
    41
    Location:
    polokwane
    Thanks RiaanP. 5 hats what I thought. ..
    A friend have bought a t5 quad unit for his tank and apparently there's two uv lights in there. They are not working so he wants to replace them
    Hence my question.
     
  5. RiaanP

    RiaanP Moderator

    Joined:
    11 Aug 2008
    Posts:
    23,163
    Likes Received:
    1,231
    Location:
    Centurion
    UV? Or Moonlights?

    Some T5 units had 2 moonlight LED units in them. Moonlights, yes he can replace.

    OK, then again, some of the new LED units does have one or 2 UV leds in between the clusters. Not sure how they prevent UV radiation but apparently the corals needs it.
     
  6. Nella

    Nella Thread Starter

    Joined:
    29 Oct 2011
    Posts:
    309
    Likes Received:
    41
    Location:
    polokwane
    Apparently on the t5 globe stands uv
    Not sure but also don't sound right to me.
    I will get a definite answer on this.
     
  7. TaahirS

    TaahirS MASA Contributor

    Joined:
    10 Jul 2014
    Posts:
    2,586
    Likes Received:
    284
    Location:
    Cape Town (southern suburbs)
    There are different types of UV rays. UV A is what's used in the T5 and led lights for the colour 'pop'. UV C is what's used in the sterilizer.

    UV C is a smaller wavelength and is dangerous.
     
  8. Toolboysa

    Toolboysa Moderator

    Joined:
    30 Nov 2010
    Posts:
    2,252
    Likes Received:
    134
    Location:
    Wilgeheuwel
    Probably an actinic t5
     
  9. Nella

    Nella Thread Starter

    Joined:
    29 Oct 2011
    Posts:
    309
    Likes Received:
    41
    Location:
    polokwane
    Think you are correct
     
  10. Toolboysa

    Toolboysa Moderator

    Joined:
    30 Nov 2010
    Posts:
    2,252
    Likes Received:
    134
    Location:
    Wilgeheuwel
    UV is 400nm and shorter wave lengths. The LEDs in aquarium lights lights are just violets but close to the UV spectrum. 405nm is the closest to UV ive seen available from DIY build places

    If memory serves me right the giesemann has t5 super actinic starting at 400nm
     
    459b likes this.
  11. Riekert Botha

    Riekert Botha

    Joined:
    20 Jan 2016
    Posts:
    64
    Likes Received:
    0
    Location:
    Hermanus
    Please help out with this then: I've got a T5 with 4 spaces for globes. I've got a cold water tank. What do I put in those "spaces"?
     
  12. Nella

    Nella Thread Starter

    Joined:
    29 Oct 2011
    Posts:
    309
    Likes Received:
    41
    Location:
    polokwane
    @TaahirS
    Very intresting...I didn't know that
    Thanks
     
  13. Nella

    Nella Thread Starter

    Joined:
    29 Oct 2011
    Posts:
    309
    Likes Received:
    41
    Location:
    polokwane
    @Riekert Botha good question. ..
    I don't have a clue what would the requirements be on a coldwater system
    But I'm sure one of the more knowledgeable guys will give you an answer
     
    Riekert Botha likes this.
  14. RiaanP

    RiaanP Moderator

    Joined:
    11 Aug 2008
    Posts:
    23,163
    Likes Received:
    1,231
    Location:
    Centurion
    For growth, white, 10000K and even lower. 6000K will give a lot of growth, but the water would look yellow and the algae would love you. So 10000 is good. Maybe even 12000 to 16000, slightly more crisp than 10000. Actinic and pure actinic, would give that blue deep water look, for the color pop. Bring out the florescence in the corals.

    with 4 tubes, the old tried and tested combo, 2*10000 plus 2*20000

    If you can get the other colors then the slight pink / red is an option, one 8000 for growth, 12000 or 15000 to offset the 8000 and a 20000. the pink/red can be swapped for another 12000 or 15000.

    Start with the blue in the morning, bring in the whites 2 hours later. Evening switch off the whites, and let the tank run on the blues. With dual ballast this is why the tried and tested combo works better.
     
    Riekert Botha likes this.
  15. Riekert Botha

    Riekert Botha

    Joined:
    20 Jan 2016
    Posts:
    64
    Likes Received:
    0
    Location:
    Hermanus
    Riaan,

    Great info - thanks a lot!
     
Recent Posts

Loading...
Similar Threads - lights Forum Date
Perspex Stands for lights New Members 28 Nov 2016
[wtd] Wanted: T5 lights to fit 1.3m tank Wanted 15 Nov 2016
Nemo lights Sponsor Specials 2 Nov 2016
DIY T5 lights General Discussions and Advice 29 Aug 2016
Lights for a cube ? Lighting 15 Aug 2016
Moonlights all night long ? Lighting 15 Aug 2016
[wtd] led lights Wanted 1 Jul 2016