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Old 01-30-2013, 05:06 PM   #7
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Originally Posted by raulfd4 View Post
I asked this specific question on Hoppy's thread about lighting with PAR vs Watts, and he said that as long as there is no mineral buildup on the glass, there shouldn't be much of an affect on PAR because of the glass and condensation.
i must've read that somewhere else then...

the issue i see though, is that there is almost always a mineral buildup unless you've just cleaned it
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