viagro- yeah after looking around his kit does sound like a good idea, i think i could even modify it a bit
oh and yeah im in adl, you r 2?
From his last message to me:
I run the power supplies at half power for a simple reason, heat is what kills electronics and by running the lights at 1/2 power they only generate 1/4 the heat which GREATELY extends their life. I do this because the leds will run almost indefinately - although they are rated for 70% light output after about 11 years, the design of my light cools them to about 25C. As they can run much hotter than this (up to 100C) they will last longer than their rated life. The fan is a low speed fan which typically last 3 or 4 times as long as a normal fan, and I increase that by only running them on 10.5 volts instead of 12V! The whole design is about maximun life and reliability. By the way, the leds are more efficient and produce more light when they are cool.
If you want a light with 105 watts, I would simply make the light slightly larger and add an extra power supply. The cost would be £290 which is 1 1/2 times the cost of the standard light.
One last thing, please dont confuse wattage with light output, they are not the same with leds. High quality leds produce about 4 times the light for the same wattage as chinese leds!
A 600 HID (normal metal halide) light produces about 210 watts of light the plants can use (known a PAR light). Almost all of the output (about 95%) from one of my lights can be used by the plants, so one of my lights is equal to about 200 watts of a HID light.
