Halogens FTL.

Yah, they waste like 90% of their energy on heat, and not nearly enough on light. If you want something cheaper than HID, use CFLs. They're cheap, in the right spectrum, and put off very little heat.
Splifted Reviewed by Splifted on . Halogen lights? do halogen lights work. they are much less expensive compared to the HPS and other HID lights and i was wondering if they work as grow lights? can anyone find any info on then like a spectrometry or such. would love to find that they work by either have red or blue light without having to get some and try. but if all else fails what harm could a small experiment do. Rating: 5