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Old 12-10-2004, 02:02 AM   #11 (permalink)
 
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This is what the vendor wrote when posed the same question:

"You should definitely use a glass or similar barrier between the lights and the water. This is the only really safe way to install lighting. It will also allow you to get more light into your tank since you lose a lot more light to dirty reflectors and bulbs than you ever will to a glass top even when it is dirty."

I've always heard that cover glass absorbs key wavelengths that are beneficial to plants. That's why I've never used one with ordinary fluorescents. The consensus seems to be that safety dictates the use of a cover glass with PCs
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Old 12-10-2004, 04:12 PM   #12 (permalink)
 
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<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by William:
This is what the vendor wrote when posed the same question:

"You should definitely use a glass or similar barrier between the lights and the water. This is the only really safe way to install lighting. It will also allow you to get more light into your tank since you lose a lot more light to dirty reflectors and bulbs than you ever will to a glass top even when it is dirty."

I've always heard that cover glass absorbs key wavelengths that are beneficial to plants. That's why I've never used one with ordinary fluorescents. The consensus seems to be that safety dictates the use of a cover glass with PCs <HR></BLOCKQUOTE>

I don't know that the great wavelength debate has been solved, so I believe there are still different parties wrestling over red/blue versus green.

On the other hand, safety isn't really too debatable. When the right circumstances line up, equipment damage, personal injury or death can result.
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Old 12-11-2004, 02:41 PM   #13 (permalink)
 
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I have an AHSUPPLY 55X2 Compact - one 6700k and one 5000k bulb as well as a 13 watt in the center of the hood above my 55 gal. - The lights are about 5 inches above the water with no glass.

I have used this method for about 2 years now without fail or problem Just make sure you install a fan in your hood, it gets hot.

Good Luck!

Platy
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Old 01-04-2005, 09:17 AM   #14 (permalink)
 
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besides everything else mentioned in favor of glass, like mckee alluded to: you want something to stop the strip light from falling in the water from accident, child, cat, etc.
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