LED from ebay!

Discussion in 'Lighting' started by danielcassar, 27 Aug 2012.

  1. danielcassar

    danielcassar

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  3. Quintin

    Quintin

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    This listing () has been removed, or this item is not available.:whistling:
     
  4. danielcassar

    danielcassar Thread Starter

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  5. carlosdeandrade

    carlosdeandrade

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    10w is very powerful, never heard of epistar, not sure what drivers you will need for those, maybe @hadiosbourne can help, or even @RiaanP.
     
    Last edited by a moderator: 26 Nov 2015
  6. Draylin

    Draylin

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    I was looking at these as a cheaper alternate to going with the Cree xp-g LEDs. After some checking I decided to rather go with Cree as the light output per watt was higher. Additionally very few of these multi led builds , in this case it's a single housing with 9 or 10 one watt LEDs , have spectral graphs so all you know is the color rating which may or may not actually produce any usefull par.

    That being said I have seen some guys use the 50 and 100 watt versions Of these chips and they seem happy enough with the results so if you got hold of a few of them for cheap then why not give them a try.
     
  7. Quintin

    Quintin

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    I use those if we are thinking about the same lights.
    Epistar works well if you want to use it in your sump to grow loads of stuff.

    Let me know if you want a picture.
     
    Last edited by a moderator: 26 Nov 2015
  8. RiaanP

    RiaanP Moderator

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    Not sure, how can it be cool white and 20 000K ?????


    Cool white is 4000 to 6000 K (depending on manufacturer)
    Warm white - cool white - daylight - 10000K and onwards.
     
  9. Quintin

    Quintin

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    You can order them specifically at 20k but yes, they are normally 6000K and super for growing algae.
    You need to add a blue light to the spectrum if you want it over your DT or the light produced will look very yellow in the water.
     
  10. RiaanP

    RiaanP Moderator

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    cool white / 6000K will be perfect for your macro algae. But very yellow for the display tank.

    Looking at Brentv Led units, they are 14000K, a lot better than 20000K as 20 will be too blue. Using 6000 and 20000 together might help with each other balancing the other out.
     
  11. Mc

    Mc

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    Thats a really good price.
    I have some of the 3w epistars in my tank and they not too bad.
     
  12. ziyaadb

    ziyaadb

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