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Forum: Hydroponic Grow Lights 02-14-2009, 08:33 AM
Replies: 1
Views: 12,845
Posted By Ron
1. Tungsten Halogen lamps are as inefficient to...

1. Tungsten Halogen lamps are as inefficient to operate as incandescence and are very expensive to operate. Their
lumen-per-watt output is very low.
2. 400 watt Metal Halide or High Pressure Sodium...
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