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Old 02-14-2009, 08:33 AM
Ron Ron is offline
Senior Member
Join Date: Jan 2009
Posts: 1,285

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 is good for 2 to 6 ft. square area and they last longer too.
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