How Many of These LED Lights per Plant?

i keep checking these LED threads to kind of gauge where the technology is
this looks very expensive to setup a grow with

Dollar per watt, these are some of the most expensive ones. $18.00 for 2 watts, $9 per watt.
For 90 watts worth of these, it'd be over $800.

For less $800, there are some pretty nice LED panels out there.

I'm kinda curious what these would do if used in numbers: http://www.1000bulbs.com/search/?fi...temperature]=2750K&filter[lumens+initial]=485

A DIY panel using these, and basic e26 sockets (same used for incandescent bulbs) would be pretty cheap. I might try it just to see what it'll do.
 
CFL would be much cheaper per watt. Blackstar makes some decent low priced LEDs. Those lights you were looking at are useless for growing.
 
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