Since GC doesn't specialize in grow equipment, I assume it's ok to post a link to HTGSupply.
I saw this LED bulb on HTG and loved it. After reading through the lengthy, praising description, I came upon this clause.
LEDs are nearly 100% efficient at plant growth! This is 10 times the efficiency of a Sodium or Halide light, so therefore this converts to the same output as a 400 watt Sodium fixture!
Here's the light.
http://www.htgsupply.com/viewproduct...roductID=52258
It's 13 watts and plugs into a 110 volt.
Nowhere on the page does it give us a lumen value.
Is it actually possible for this light to have the same output as a 400 Watt HPS??
I'm planning on ordering a 400 or 600 watt HPS/MH for this season, but I'd much rather get a couple of these bulbs for half the price if they'll grow the plants that fast.