New lighting - new technology????

[fredfish]

"These are also available in wattages as high as 100, replacing the energy guzzling 400 watt and above, in commercial spaces."

I think that this hydroponics site is being misleading. Notice that they don't say what kind of lighting, just 400W. I am sure they are 4X more efficient than no lighting, but not HID.

Has anybody thought about how the configuration of these lights may affect the usable light they emit. With the two bends it is like putting 4 tubes in a bundle. How much of the light shines inwart towards another part of the tube and never gets out to your tank?

Fred.