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20-04-2008, 10:16 PM | #1 |
SiaoGu Gives You Wings
Join Date: Jul 2001
Posts: 4,169
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DIY LED lighting
It has been very long since I did any DIY projects. Now for my DIY Aquarium lighting experiment, some Luxeon V and CREE XR-E. They are meant to replace my 2x250W MH. Is it possible? I dont know yet, thats why I started this experiment.
I ordered 8pcs of the Luxeon V, 5W royal blues, 450nm. Each Luxeon V is actually 4 leds in one package, if you look closely you will be able to find 4 dies inside the lens Modified array of 12pcs of CREE XR-E 1.25W 5000K |
21-04-2008, 01:18 AM | #2 |
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Note that the Luxeon royal blue peaks at 450nm useful for photosynthesis but no glow for corals . Actinic peaks at 420nm, shorter wavelength for glow but not available for photosynthesis |
21-04-2008, 01:19 AM | #3 |
SiaoGu Gives You Wings
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Spectrum chart for the CREE XR-E, 5000K was chosen because of the increased yellow/red spectrum needed for photosynthesis. However I tried keeping some purple acros under pure 15watts of CREE XR-E 5000K and failed, the acros bleached and recede slowly over 3 weeks. I have now increased to 40watts of royal blue and 15watts of white, only 1 side of the tank is lit due to the costs of luxeons USD$23+ each! |
22-04-2008, 11:32 PM | #4 |
SiaoGu Gives You Wings
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These 8 pieces of Luxeon V are driven by 2 of these tiny Luxdrive LED Drivers at 700mA
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27-04-2008, 12:00 AM | #5 |
SiaoGu Gives You Wings
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The LEDs are connected to a 4'x1' 3mm aluminum sheet as a heat sink. Effectively, only half of the aluminum is heated. The other side is room temperature.
I have taken temperature readings directly on the heat sink above the LEDs, its around 43-47C, well below the thermal design requirements |
05-05-2008, 10:28 PM | #6 |
SiaoGu Gives You Wings
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Received more Luxeon K2, still waiting for the CREE XR-E Q5s and 410nm actinic LEDs . These K2 will be driven at 1000mA or 1500mA once the 1500mA drivers are available.
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12-05-2008, 10:35 PM | #7 |
Guest
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Wow very pro leh
Hi,
Look cool, this DIY LED light. Good for adding moonlight to marine tank. |
14-05-2008, 12:29 AM | #8 |
SiaoGu Gives You Wings
Join Date: Jul 2001
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14-05-2008, 11:05 AM | #9 |
Dragon
Join Date: Apr 2006
Posts: 707
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is the led complete? how much it cost total? and how much heat is produced compare to MH..
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14-05-2008, 12:58 PM | #10 | |
SiaoGu Gives You Wings
Join Date: Jul 2001
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Quote:
As for heat, there is almost no heat input from the LEDs. I once ran the LEDs with 1 tunze wavebox with no chiller for about 12hours when I shut the main pump down due to leaks. The water temperature raised from 25C to 26.8C when I came back at night, I'm actually once pleased that the wavebox operates relatively cool! |
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Tags |
coral, diy, led, light |
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