Diy LED lighting

Discussion in 'D.I.Y.' started by Shaheedo, Mar 7, 2012.

  1. Shaheedo
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    Shaheedo Algae harvester

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    Hi
    I am in the process of installing High power LED lights in my 1.5m tank.

    the LEDs that I will be using is 11 x 3watt 160lm 6000k LEDs
    These are cheap LEDs i got from ebay and I ordered a driver from lightake.com.

    I intend to rivet these LED to my tank cover made from aluminium. So far I have just connected the LEDs and driver to test it.

    [​IMG]
    [​IMG]
    [​IMG]

    So why LEDs?
    they have a lifespan of 50000-100000hrs
    got built in reflectors so most of the light goes to where it is intended to go.

    Regards
    Shaheed
     
    Last edited by a moderator: Apr 11, 2014
  2. shihr
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    shihr Administrator Staff Member

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    So how was the test? Are they really bright?:)
     
  3. Greystoke
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    Greystoke Specialist

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    Do you have any info on these LEDs, like Lumen output vs bias current, etc?
     
  4. Icarus
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    Icarus Algae harvester

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    And my million dollar question, or rather a $4 one, when you ordered from lightake.com, was shipping really included? How long did it take to get to you and have you had any problems with the import?
    Also, with these, do you get a spot light effect? LED's aren't that great at diffusing the light, but some of them has a lens to do that. I'm thinking of getting a few strips from lightake but only if it is worth it
     
  5. Vis
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    Vis Plant menace

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    With LED's spotlighting will be effected by hight above tank and what kind of lens you have on them.

    I think strips don't have lenses but the power they put out in regards to the distance from each other may cause spotlighting.

    I am also not that convinced that they are powerfull enough.
     
  6. Icarus
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    Icarus Algae harvester

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    I had a look and I think the LED strips I wanted would be a bit on the "dowwe" side, not bright enough at all, unless I use enough to output 40W anycase :)

    These 3W's might work, will wait for some pics... CFL's until then...
     
  7. neilh
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    neilh Algae harvester

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    Together with a GU10 fitting
    [​IMG]
     
  8. R.C.
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    R.C. Moderator Staff Member

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    SMD strips are not great for plant growth, though they can be used for aesthetic purposes. They take up little space and don't need additional active cooling or passive heat dissipation like with HO LED's.
     
  9. Shaheedo
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    Shaheedo Algae harvester

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    if you use 5mm LEDs you wil get spotting because most of the light is emmitied at 30deg . the 3watt leds I am using emits it 90% of its light at 160 deg with no lenz and i wil be using 11 leds spaced at 13cm then I should not get spotting.

    These 3 watt LEDs are really bright you cant look directly at it you will start seeing dots

    I bought the 2m RGB LED strip with remote control. you dont get spotting and it is more for night time viewing not plant growth. i damaged my one because i did not understand the IP ratings :'(. . i ordered a new array of RGB lights

    there is 3 china web sights i shop at and trust. they are lightake.com , focalprice.com. dx.com
    shipping takes about 4-5weeksand the price they show is including shipping ;),you need to order a certain amount to get a tracking number and it will come through the post office. sometimes you pay duty and vat because customs stops packages randomly.

    Regards
    Shaheed
     
  10. Icarus
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    Icarus Algae harvester

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    How much in your experience is the duty then? I know it will differ, but round about?
     
  11. Shaheedo
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    Shaheedo Algae harvester

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    I done my thesis for B-Tech electrical engineering on LED lighting. My experience in planted aquariams is about 6months

    take a look at these links
    http://aquariums.seaspraydesigns.biz/
    http://reefledlights.com/how-to-diy-led/
    http://www.aquatic-eden.com/2009/09/led-planted-aquarium-lighting-part-1.html
    http://ledgrowlightbase.com/

    they done something similar to what I want to do but I want to see how it works with cheap high power LEDs.

    I need to find some cheap heat sinks then I will be ready to assemble

    Regards
    Shaheed
     
  12. shihr
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    shihr Administrator Staff Member

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    Those CPU heat sinks? Are they expensive?
     
  13. Shaheedo
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    Shaheedo Algae harvester

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    I no but i will try to get away with small heat sinks to keep cost down. the canopy of my tank is made of aluminum(1.5m buyu) so I am hoping that if I use a small heat sink on the LEDs connected to the canopy, this should dissipate the heat. If that doesn’t work I will have to include a small fan to assist in the cooling
     
  14. Shaheedo
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    Shaheedo Algae harvester

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  15. boebie
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    boebie Green fingers

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    How about some pics of the setup and it's effect please Shaheed.
     
  16. viskop
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    viskop Noob

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    don't you need dimmable drivers for the leds?
     
  17. Shaheedo
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    Shaheedo Algae harvester

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  18. viskop
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    Looks pretty cool! How many leds will you be able to connect to that? - sorry I am not too clued up with electricity.
     
  19. Sparki
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    Hi Guys,

    I recently switched over to LED's for my 1000litre marine tank (2.0m x 0.7m depth bowfront) and they work brilliantly.

    It is a DIY kit that www.rapidled.com sells in various sizes with a choice of different lenses. As for mounting them, I used strips of 25mmx2mm thick aluminium U-bar and used the thermal adhesive option with a couple cheap pc fans on the back 'fins' but the aluminium stays cool even without the fans. Fancy heatsinks are really not needed in my opinion.
     
  20. Shaheedo
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    Shaheedo Algae harvester

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    Hi Sparki

    Can you upload some pics of your setup

    how much LEDs are you using and how far are they spaced apart.

    I just got1.5m lenth of aluminiam rectanguar tubing I want to mount my leds on and I want to bypas some of the water or my filter for some active cooling, just need some time to asemble everything
     

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