And thanks for all the fish.

Four dimensions - don't forget time We're not in Hell, we're just in a state of flux. Matter and energy, constantly being recycled. Yes, it sounds hippy "We're all part of the universe" but we are. Who knows what conscious or otherwise form we become once our current arrangement of molecul...

what do you see as the future of development in this area driving cost down obviously BUT the ability to build arrays that are 'tune'able is amazing it seriously seem to me the only thing lacking now is a mike the plant can step up to and say what it would like more precisely... Tuneable is good, b...

Heatsinks are optional if running lower currents. On a 30C (86F) day, the board without heatsink hit 47C (116F). The boards max out at 225W, but theoretically could run higher with active cooling. As long as they run below 100C they will last as advertised, but ideally you'd want no higher than 70C....

Success. Got a prototype up and running and it is performing exactly as hoped. You can see the UVA LEDs, but the high CRI LEDs are indistinguishable to the human eye. LEDassembled.jpg IMG_0626.JPG It's not until you look at the spectrum that you can see the influence. Both these graphs below are of ...

There are a few different theories on this. A lot of guys are running UVA and UVB for a few hours to simulate peak UV times during the day. For Emerson effect, they are running far red (730m) towards the end of the cycle to simulate dusk. Both of these require separate channels to drive at different...

Yeah, that's right - that's why there have been concerns over the amount of UVB given off by twisty CFLs vs tubes and other lighting. In fact, LED companies tout the lack if UV as being an advantage for their indoor product over fluoros.

LEDs convert more energy to light and less energy to heat compared to HIDs. LEDs can be placed closer to the canopy, maximising their efficiency. LEDs have a fuller spectrum of light than most HIDs (CMH being the best HID), providing more efficient photosynthesis. LEDs focus all their light down, sp...

what would you say is the ideal canopy dimension for those panels? assume less heat is allowing you to keep them closer to the plants than HID allows are you seeing even better results the simple watts to lumen increase over bulbs? These are designed to be a direct 600W HPS replacement, so two LED ...

Thanks Prawn, My old growing area in the attic between joists is 4' x 8' perfect for this size. Ahh i forgot abut the low UV thing with leds. tho i think leds can be engineered to produce a wide range of frequencies, but don't know if there are any out there with sufficient UV for our plants. if so...

I'm not really saying "Buy my LEDS", BTW - that was just a joke about SPAM

There might be some boards floating around for anyone interested, though

Nice "spam". but is there a link for buying? Yer using a vertical CFL also (can't quite give that up eh). how much do you think that's adding to the LED light production? or just difference in growth? Wow the specs look awesome, maybe l left indoor growing just too early for the fun stuff...

NICE! how much in US $ ? :toker1: Not too sure yet. I guess it depends how many we make and if anyone else's interested. We're making a limited number first, mainly as they're what we wanted for ourselves. It's really a LED panel made for growers, by growers. They'll be mostly DIY panels and kits, ...

A few more. I love these things.

Here are some of the LED experimental grows: