LED help

Discussion in 'Lighting' started by Diveshan, 19 Feb 2013.

  1. Diveshan

    Diveshan

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    Hi guys i need some major help, i need to order some led's but have no idea if im overkilling or going to end up with insufficient light. Im planning on ordering 70 3w luxeon ES Rebels. Broken down as 24 neutral white, 28 royal blue, 8 violet, 6 red and 4 cyan. It will be for a 4foot tank which will be SPS dominated. I have been searching around the net as much as i can(busy doing my honours atm) but cant figure out if this combination will work. Any ideas?
     
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  3. Toolboysa

    Toolboysa Moderator

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    what is the exact size of your tank

    Off the cuff id say your royal blue is about 1/2 what it should be when using neutral white

    Are you going to be ordering all your Leds from stevesled (assuming this is where you planning to get them from)
     
  4. Diveshan

    Diveshan Thread Starter

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    The tank is 120cm long, 55cm wide and 55cm high, will it affect coral health or would you recommend more purely for aesthetic reasons? I can run 2blue T5s with the leds for a few months and order extra blues when i order a second set of LEDs for my lps tank. Student budget so 70 is the max i can afford for now. Do you think i should replace some neutral white fotlr royal blue? Yeah i will be ordering from stevesleds. Thanks dude
     
  5. Fred d

    Fred d

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    Tagging along
     
  6. Wes

    Wes

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    forget the red, unless you are thinking of purchasing some anthias, if not forget them, go 60 and 120 degree in 1 out of 3 on the white mix of (10k and 12k) go more blue, get UV if possible.

    Ultimately: IMO ofc

    70

    30 blue (Royal) @ 60 Degree every 3rd one 120 Degree lense
    20 white(mix 10k and 12k) @ 60 Degree every 3rd one 120 Degree lense
    10 UV @ 60 Degree
    10 Blue @ 60 Degree
     
  7. Diveshan

    Diveshan Thread Starter

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    Thanks for the info. I have seen somewhere that the different colours are too complete the spectrum which is the only reason i added the red in. Would just 20 white give enough light for SPS though?
     
  8. Toolboysa

    Toolboysa Moderator

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    Id recommend the following for your size tank

    24 Neutral White
    48 Royal Blue

    7 Cool Blue
    7 Cyan
    7 Red
    When these 3 colours blend it gives you a white light so you wont be changing the colour of your tank with this combo. Zooxanthellae in your SPS contains Colorophyll A which has two peaks one at 417nm (Violet) and at 655nm (Red). So red is not essential but why not give your sps the best possiable chance at having amazing colour

    Violet 12 (if at all possiable get 6 of stevesled and get 6 of Ledgroupbuys 430nm Violets)

    This will give 686 μmol·photons/m2/s which is in the saturation limit of photosynthesis

    Your spectral graph will look like this

    1a.jpg
     
  9. Diveshan

    Diveshan Thread Starter

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    Thats seems to be an ideal setup that you have described, but unfortunately thats going to be out my budget, at max i can get a 70 led setup as i still need to get drivers and a power supply etc...have about 4k to play with but shipping is around $80 so that dents it abit. Could i maybe cut down on the numbr of cyan blue and red abit? On a short term im more interested on coral health and colour, the actual look in terms of 14k or 20k that the tank gives off i can tweak at a later stage
     
  10. Francois

    Francois

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  11. Francois

    Francois

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    70 leds on your tank size will be more than enough for any type of sps's
     
  12. Toolboysa

    Toolboysa Moderator

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    k the closest i can get is the following

    15 Neutral White
    30 Royal Blue
    4 Cool Blue
    4 Cyan
    4 Red
    12 Violet

    this will give you 234.8μmol·photons/m2/s which is just over what is considered medium light

    Of course depending on the coral this would be considered medium light. Averages are the following

    80-100 μmol·photons/m2/s low light
    150-200 - medium
    300-400 - optimal
    600-700 - Saturation limit
     
  13. Toolboysa

    Toolboysa Moderator

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    Like Francois said cluster your LEDs otherwise your in for a disco looking tank.
     
  14. Toolboysa

    Toolboysa Moderator

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    Gives you 237.1μmol·photons/m2/s also a good number
     
  15. Diveshan

    Diveshan Thread Starter

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    Thanks so much for all the help guys, your tank is amazing Francois. I will most likely go with the 7 clusters as that will fit my tank perfectly fir the aquascaping. Toolboy would you say those numbers are good enough for most sps? Really want some good coral colour.
     
  16. Diveshan

    Diveshan Thread Starter

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    Okay so i managed to push my luck abit with the parents. Gonna go with the following
    21 neutral white
    28 royal blue
    14 true violet
    7 cyan
    7 cool blue
    7 deep red
    1X quad driver at 1000ma running 28 neutral white
    1X quad driver at 700ma running 21 royal blue and 7deep red
    1X quad driver at 700ma running 12 true violet, 7 cool blue and 7 royal blue
    1X 400w power supply
    Does that seem better now?:thumbup:
     
  17. Francois

    Francois

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    I would run every color led on a seperate driver so that you can tweek the colors nicely, this is what I'll do

    21 NW on 1000ma Triple driver,
    28 RB on 1000ma Quad driver,
    14 Tv on 700ma Double driver,
    7 DR on 700ma Single driver,
    7 C on 1000ma single driver,
    7 CB on 1000ma single driver
     
  18. Diveshan

    Diveshan Thread Starter

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    Aha thanks guys gonna go with Francois'z last idea and run them on different drivers. Will update when i recieve my order
     
  19. keegan_n

    keegan_n

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    Why don't you speak to andre at reef aquatics...he has led units..they're pretty awesome ..and with the controller you can simulate sunrise an sunset..also very neat compared to diy... And not forgetting the reasonable price;)
     
  20. Triven

    Triven

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    How did the build go with the led
     
  21. Dan

    Dan

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