I have a crazy stash of LED sizes, colors, and styles that I am taking to UNC Wilmington soon for spectral analysis and PAR measurements. When done, they are going over my 23" cube when I set it up.
This is completely experimental, is total overkill, is overcomplicated, and will be totally blinged out with some nice digital panel meters to tell me what the drive current is set at; mounted on the canopy.
This could be done in all whites, just as easily, very nice looking, and simpler. But. Why not try something odd? If I have the LEDs, why not give it a shot?
My goal is to have these set so that I can change the overall color temp and look of the tank at the twist of a knob.
There will be 4 strings of LEDs (4 drivers). All LEDs mounted on a 7X12 heatsink, fan cooled. All LEDs will be dimmable.
Here is the arrangement.
8 royal blues (XRE) and 4 cyans (Rebels). This will give me incredible control over the color temp of the tank. Likely to run them very low, maybe 200mA.
String #2: WHITES.
8 Neutral whites (XPG), and two 10-watt Bridgelux 402's (5600k). These are the main lighting. Likely drive current, 500-700mA. These LEDs chosen for their efficiency and color rendering.
String #3: DAWN/DUSK.
1 huge 20-watt, 15,000K white (Satistronics). 8 Cool white (XPG) and two red (XPE). These were chosen to produce that lovely reddish-purple-white look that a natural sunrise/sunset produces. Likely run at a low current, maybe 200mA.
String #4: Moonlights. Four cool white (XRE) that will be run at a very low current, likely 50-60mA, which is the minimum current that I've been able to drive them at. Haven't yet decided what driver I'll use, maybe a dimmable buckpuck. Open to suggestions.
Don't be fooled by the amount of blue I have: I will actually be getting about 4 times more white light since I'm driving the dawn/dusk string at the same drive current (mostly white) and driving the white string much higher.
Moonlights will run 24/7.
Dawn/Dusk will come on at 7am.
Blues and Whites will come on at 11am.
Blues and whites off at 8pm.
Dawn/Dusk off at 10pm.
Pics to come when I'm able.... got midterms I'm supposed to be studying for right now.