Are you saying that 100 watts of LED would outperform my 250 watt HPS?

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That's what High Times claims, and every other manufacturer of LEDs for plants also claims. Apparently they have a bunch of research to back it up. It's fairly compelling.

Full disclosure... they actually claim much more than that.

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Why people believe strange things: http://www.youtube.com/watch?v=8T_jw...eature=channel

i just got a 90w led ufo.
after about 2 weeks there was significant root growth but pretty much nothing else

I believe that leds work great for flowering and are a must for keeping the heat down
but if you dont have heat issues use hps for a speedier harvest yet
leds seem to spark flowering i like the 50 watt panels but i think a 50 watt led equals
a 70 watt hps just from exp

I think if you were new to growing and didnt know better. LED's would seem to be the bomb! But for someone who knows what 600 watts of well cooled HPS can do. NOT EVEN CLOSE! Just my humble opinion though.

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"Its all good if you open your heart and mind and allow it too be."

It seems the North American pricing is way inflated for LED grow panels at the moment, so you are not exactly comparing apples to apples on pricing.

(I do agree that the comparison output claims are exaggerated but not sure how much)

All the main lights are being manufactured in China, most plants are in Shenzen or elsewhere in southern China and have main retail offices in HK.

In HK (from the retail offices) the prices are roughly as follows (and falling month by month)

90W UFO Style = US$100-$120
120W Square style Panel US $130-$160
300W 288 x 1w LED Rectangle Panel US $350-$400
600W 288 x 1w LED Rectangle Panel US $650-$700

I wont mention any particular name or manifacturer to avoid any claim of bias, but with a few minutes on Google you can find this our for yourself and just email them (as I did).

Some of the prices you see in US online or mail order grow shops are nothing short of daylight robbery, and the shops with their exaggerated claims and 500% markups should be avoided.

Eat this, Spectra Unit 90watt Led grow, almost done.Whe got buds...
I dare U, who is fake now...anyone?

Screw LED's and MH/HPS Whatever happened to the MPS Lamps? I saw a lot about them in 2007 They seem to have faded away

Microwave Powered Sulphur Plasma Lamps

Yeah right..

If you want to save money on the electric, use daylight cfl`s to veg and hps to flower. I found that the plants are shorter and fatter when veg with cfl's and roots are more established. Because you can have the lights closer there is less chance of the stem warping when it is trying to reach the light.

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Electrical questions welcome.