The Planted Tank Forum - View Single Post - What to use as "hood" for DIY light?
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Old 11-09-2012, 11:05 AM   #20
MrBrongher
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Quote:
Originally Posted by Hoppy View Post
Glass mirrors are poor reflectors. There is a big difference between a household mirror and a good reflector.
Explain, please. Is it something to do with the difference between visible light and photosynthetically useful light? I thought mirrors were, by definition, good reflectors.
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