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#1
03-01-2013, 02:04 PM
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I always wondered this too, how people are having to lower their lights when they switch from halides to LEDs. My sand bed is blasted with 250 PAR while the upper most part of my rock work gets almost 400 PAR. And I have coral top to bottom. Tank is 20" tall with light 8" off the water surface.
Oh, this is with my 3x250 watt halides running 14K bulbs. 
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#2
03-25-2013, 08:26 AM
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Bringing this back to life abit, I tested my LEDs tonight with a par meter today. Looks like I am getting around 300-500 up top and around 200 on the lower level rock and around 100-150 on various areas of the sand bed. Does that seem about right?
Don't have any lenses on the LEDS currently, but would the lenses help much? I just don't have the lights really high up so I left the lenses off so the light would hopefully spread around even more I was thinking. Tank is 3 ft long and 2 ft tall
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