any LED boffins that know much about non-hydro lights

Please read these two posts if you think white light is best for plants vs. red and blue only.

Self-made LED panel general discussion
Self-made LED panel general discussion

I think i would buy 8 red(660nm) 10W and 2 blue(455nm) 10W LED from this instead of a white 80W.
http://stores.ebay.co.uk/Quans-LEDs/...=p4634.c0.m322
(it's properly more expensive if you buy single 10W drivers vs. a single driver for a 80W LED - but depending on where the led are used a big heatsink is avoided )

White light is wasting at least 1/3 of it's energy on green light, energy that would be better of, if it was used on red or uv instead.

the last link was a mostly red bit blue hydro light not a white light.
im just looking at ways of getting my electricity usage down at all costs.
but that might be the link i need thanks rasser

Originally Posted by Rasser

NO
Not but judging from the pictures from this test: 440W' HPS vs. 70W'
Self-made LED panel general discussion

' Real draw used

you say 440wHPS vs 70WLED but the link is to self made led panel. is that the right link?

CREE is currently making 10w LEDs with a single die. There are 100w and 150w high bay fixtures using those LEDs but they are pricey - ~$350 from China and likely twice that made in the US.
http://www.cree.com/~/media/Files/Cree/LED%20Components%20and%20Modules/XLamp/XLamp%20Reference%20Designs/XLamp_XML_10K_HighBay_ref_des.pdf

If someone hasn't mentioned - those colored 10w chips and the 85w chips are arrays of 1w dies. So an 80w array is not equivalent to 8 10w diodes.