After a trip to Costco, I came back with an experiment. A pack of 2 battery operated, 6-light LED lights for 1,777 yen, (15 bucks). After some velcro we have 12 LED shining down into the tank. They advertise as running 10,000 hours on the batteries. So is this going to work? Is there anything different about these LEDs and others made for aquariums?

So far this is a fish & live rock set-up so light is not critical. But I would like to add some low-light corals as I go along. Let me know if I am doing anything disastrous.

The LED's that are used in the LED lighting system like my Solaris are 3 watts each so these may not be as powerful. They certainly won't hurt anything but they may not be bright enough to support corals. Here is a link to an old LED thread. http://www.talkingreef.com/forums/lighting/735-led-tech-file.html

These are only 4500k and really expensive, but an interesting idea:

LED lighting superstore. We KNOW LEDs: LED Waves : Linear LED Lighting : T8 'Fluorescent' NxT Tube (http://www.ledwaves.com/home.php?cat=345)

Hello everyone, I'm no expert on LED Lighting System but I remember something concerning the type of LED Bulbs that are used and their ability to mimic the usable light spectrum for Coral Growth. It's on the LED Lighting Podcast. Sorry for not being able to be of any further assistance.

How about this led bulb???


Super Bright LEDs, Inc - St. Louis, Missouri
tel:314.972.6200 fax:314.972.6202
superbrightleds.comPart Number: RL5-W10015 Super-White LED (GaN/InGaN)
absolute maximum ratings: (TA=25°C)
PARAMETER SYMBOL RATING UNIT
Power Dissipation PD 120 mW
Continuous Forward Current IF 30 mA
Peak Forward Current (1/10th duty cycle, 0.1ms pulse width) IFM 70 mA
Reverse Voltage VR 5 V
Operating Temperature TA -25~+80 °C
Storage Temperature TSTG -30~+100 °C
Reverse Current (VR=5V) IR 100 µa
Lead Soldering Temperature (3mm from body) 260C (for 3 seconds)

optoelectric characteristics:
PARAMETER SYMBOL MAX TYP UNIT TEST
View Angle of Half Power 2ø1/2 15 Degree
Forward Voltage VF 4.0 3.4 V IF=20mA
Peak Emission Wavelength ÿ P x=.281;y=.287 nm IF=20mA
Luminous Intensity IV 10000 mcd IF=20mA
Absolute Irradiance 9.08667E+3 uW IF=20mA

This bulb has a Lum reading of 10,000 and a reading of 452nm. I think these match that of a typical 250watt metal halide bulb. I could be wrong. Someone prove me wrong!!!!!

Mr. Tang

i cant prove you wrong, but i have been using lights similar to these in my house. They are made by earthled. EarthLED.com - The World's Most Advanced LED Lighting (http://www.earthled.com/) The XR 10 watt puts out 400 lumens. I havent found any info about the color temp but mine are a cool white and put out a white/blueish light. Just by eyeballing them they are similar to my 15K halides. But these bulbs are way expensive. 89 dollars for one. They do put out a lot of light and the housings are pretty impressive. Great craftsmanship and pretty cool looking. I'm not sure if they would work or not but everytime i turn them on I think about trying it and seeing how they penetrate the water. lol.