Quote:
Originally Posted by TZ-OH6
Dennis,
-------Metal Halide HIDs have probably the best spectral overlap with plant pigments for a “white light“ source, much higher intensity per unit area than fluorescents, and good efficiency, but heat production and sound are problems.-----------
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Not necessarily true with electronic ballast.
Check this out:
http://tomatoville.com/showthread.ph...t=metal+halide
dcarch
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