Aquatic Plant Central - View Single Post - [Wet Thumb Forum]-Bright lights

nino · 08-20-2004, 02:35 PM

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by Hawkeye:
if you have to much light penetration you might be able to adjust it by using white reflectors instead of polished aluminum. Just a thought.

Hawk <HR></BLOCKQUOTE>

Good strategy but it's not gonna work with white reflector or paint. I made a few reflectors and did a lot of researches on reflector alternatives. It turns out that white paint has between 85-90% reflectivity. The good aluminium with glass coating (like from AH supply) has about 97.5% reflectivity. So you only reduce around 7-10% of the intensity. The more effective way to reduce it is not to paint the bright color. Black color will absorb the light

08-20-2004, 02:35 PM	#7 (permalink)
nino Junior Member Join Date: Oct 2004 Location: Las Vegas, NV Posts: 20 iTrader Ratings: 0 Plant Points: 3600	<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by Hawkeye: if you have to much light penetration you might be able to adjust it by using white reflectors instead of polished aluminum. Just a thought. Hawk <HR></BLOCKQUOTE> Good strategy but it's not gonna work with white reflector or paint. I made a few reflectors and did a lot of researches on reflector alternatives. It turns out that white paint has between 85-90% reflectivity. The good aluminium with glass coating (like from AH supply) has about 97.5% reflectivity. So you only reduce around 7-10% of the intensity. The more effective way to reduce it is not to paint the bright color. Black color will absorb the light