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  #11  
Old 07-04-2005, 03:55 PM
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Quote:
Originally Posted by Murminator

What do you wipe it with?....just a damp rag?
Yup, just water on a paper towel. Make sure it's off first
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  #12  
Old 07-05-2005, 12:44 PM
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Originally Posted by Murminator
What do you whipe it with?....just a damp rag?
I use vinager on a paper towel.

Steve
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  #13  
Old 07-05-2005, 03:05 PM
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Thankyou everyone. I will go with 8"
To the best of my knowledge, there isn't a whole lot of light that can be lost with the varying distances right? I mean, you'd have to talking several feet before it would be noticable right? I just moved mine up to about 10 or 12 inches because I was getting a bit of splash.
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  #14  
Old 07-06-2005, 04:16 AM
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light looses intensity by the inverse square rule:

1/d^2

i keep my 400w SE 8 inches from water surface
some light salt after 3 months but no explosion yet

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Old 07-06-2005, 04:18 AM
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the higher the fixture the more spillage you get.
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  #16  
Old 07-06-2005, 12:50 PM
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Originally Posted by danny zubot
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Thankyou everyone. I will go with 8"
To the best of my knowledge, there isn't a whole lot of light that can be lost with the varying distances right? I mean, you'd have to talking several feet before it would be noticable right? I just moved mine up to about 10 or 12 inches because I was getting a bit of splash.
actualy it does make a big difference.

Steve
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  #17  
Old 07-06-2005, 03:46 PM
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Well then, how much difference? I see the formula above but I'll need more of an explaination.
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THE BARQUARIUM:
55 gallon cube - 50 lbs LR - ASM G3 skimmer - 30 Gallon sump - 22 Gallon refugium / frag tank - 4x 24 watt HO T5's - Mag 9.5 return - Pin Point PH monitor - 400 watt XM 20K MH in Lumenarc reflector - Dual stage GFO/NO3 media reactor - 6 stage RODI auto top up -Wavemaster Pro running 3 Koralia 2's.

Fully stocked with fish, corals and usually some fine scotch
http://www.canreef.com/vbulletin/showthread.php?t=55041
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  #18  
Old 07-06-2005, 04:03 PM
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These links show the light drop off for various distances from the bulb to the water surface. They test reflectors but you guys are using reflectors anyways so the results would be applicable.

http://www.advancedaquarist.com/issu...03/feature.htm
http://www.advancedaquarist.com/issu...03/feature.htm
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  #19  
Old 07-07-2005, 04:33 AM
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Originally Posted by danny zubot
Well then, how much difference? I see the formula above but I'll need more of an explaination.
well at 1" from the bulb I had over 2500 PAR and at 6" I was down to about 1200 PAR so almost 50% for 5" on one of my tests.

Steve
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  #20  
Old 07-07-2005, 02:34 PM
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Wow, thats crazy! I had no idea that air inhibits so much light. I might have to make an adjustment or two on my fixture now. Thanks guys.
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THE BARQUARIUM:
55 gallon cube - 50 lbs LR - ASM G3 skimmer - 30 Gallon sump - 22 Gallon refugium / frag tank - 4x 24 watt HO T5's - Mag 9.5 return - Pin Point PH monitor - 400 watt XM 20K MH in Lumenarc reflector - Dual stage GFO/NO3 media reactor - 6 stage RODI auto top up -Wavemaster Pro running 3 Koralia 2's.

Fully stocked with fish, corals and usually some fine scotch
http://www.canreef.com/vbulletin/showthread.php?t=55041
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