Quote Originally Posted by khyberkitsune
Where do I begin?

You're dead wrong.

LED versus HID in the EXACT SAME WATTAGE, LED wins every time. Proven time and time again.

For example, there's a video on youtube, doing a solid 90w LED versus 400w HPS.

At the end of it all, the 90w LED yielded 31g. The 400w HPS yielded 93g. Assuming yield increases linearly with power increase, a 270w LED would do THE EXACT SAME as 400w HPS.

That's just a bit over 5/8 the power usage for the same amount of product.

Also, for purely visual purposes, there's not a single HID on the market that can compete with Cree's 200+ lumens/watt LEDs.

Any further statements you'd like to make without posting any proof?

Hang on, I'll post a picture as well. Looks like my plants are doing just fine (minus the nute burn on the ones in the back right.) and starting to bud just as well.
WEll you sold me on using LEDs....even if they only marginally produced the same as a HPS, the energy saving would be well worth it. Not to mention the lowered risk of fire or burning out the plants. I am totally new to all this and have been asking a lot of questions of lights and hydroponics systems, but the few people I have spoken with at the hydroponics store didn't even mention the LEDs...I guess they want to sell off their old stock of bulbs before they start selling the LEDs? Thanks again mandingo. :-)