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#1
04-30-2003, 04:57 AM
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Light loss?
I finally got around to hanging my canopy from the ceiling. The 250w bulbs were 4 inches from the water but now they are 8 ish. Tank is 24" deep. I have a two part question: One, how much light am I loosing and two, is this a dumb question?
 I just like my SPS.
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#2
04-30-2003, 06:42 AM
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This link has some tables on light loss for certain reflectors over distance.
http://www.advancedaquarist.com/issu...03/feature.htm For example, this data shows light loss from 6" to 12" for each reflector tested. Table 3. Percent of PAR lost from 6” to 12” from the lamp 3x3' area 2x2' Area 1x1' Area Diamond Light 7% 18% 36% PFO Perpendicular 15% 30% 52% PFO Parallel 19% 31% 52% Spider Light 24% 36% 59% Synthetic Sun 25% 39% 49%
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#4
05-01-2003, 06:12 AM
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Sam wath kind of reflector is diamond light? any link?
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#6
05-01-2003, 04:22 PM
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what's with the products we've never heard of being the best. first we find out the salt some of us use is potentially the worst, then we find out that the spiders, which i think many of us have, are on the low end of the reflector scale.
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#7
05-02-2003, 11:15 PM
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Start looking in hydroponic places.. and others that might have stuff like that.. you'll be surprised what you find.
Steve
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 *everything said above is just my opinion, and may or may not reflect the views of this BBS, its Operators, and its Members. If cornered on any “opinion” I post I will totally deny having ever said this in a Court of Law…Unless I am the right one*Some strive to be perfect.... I just strive.
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#8
05-02-2003, 11:49 PM
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Teevee, the diamonds are good, but fairly large. Spider reflectors I believe were discontinued a couple of years ago. PFO reflectors are a decent alternative. Certainly not bad reflectors!!
__________________
Brad
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