WMAS Discussion Forum : what's a lux? http://www.utahreefs.com/forum/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sun, 14 Jun 2026 05:33:15 +0000 Mon, 12 Dec 2005 11:38:34 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.03 360 www.utahreefs.com/forum/RSS_post_feed.asp?TID=9375 <![CDATA[WMAS Discussion Forum]]> http://www.utahreefs.com/forum/1by1.gif http://www.utahreefs.com/forum/ <![CDATA[what's a lux? : Adam Blundell wrote: JON-...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=9375&PID=89463&title=whats-a-lux#89463 Author: Guests
Subject: 9375
Posted: December 12 2005 at 11:38am

Originally posted by Adam Blundell Adam Blundell wrote:

JON- do you think you need to filter UV light from pc bulbs?  I don't.

Adam

You are right, Adam... I went back and reread the article you sent me on UV Radiation (http://www.advancedaquarist.com/issues/aug2004/feature.htm) and I don't need to worry about Power Compacts unless the total wattage is above 400.

Thanks for ALL your help!

]]> Mon, 12 Dec 2005 11:38:34 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=9375&PID=89463&title=whats-a-lux#89463 <![CDATA[what's a lux? : do you think you need to filter...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=9375&PID=89461&title=whats-a-lux#89461 Author: jfinch
Subject: 9375
Posted: December 12 2005 at 11:35am

do you think you need to filter UV light from pc bulbs?  I don't.

I doubt it too.  I'd use the bulbs as is.

]]> Mon, 12 Dec 2005 11:35:26 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=9375&PID=89461&title=whats-a-lux#89461 <![CDATA[what's a lux? : Yes, but I would get a piece wide...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=9375&PID=89459&title=whats-a-lux#89459 Author: Adam Blundell
Subject: 9375
Posted: December 12 2005 at 11:19am

Yes, but I would get a piece wide enough to cover two bulbs.  After using that glass you will lose a lot of your light and may need to use two 55 watt bulbs.

JON- do you think you need to filter UV light from pc bulbs?  I don't.

Adam

]]> Mon, 12 Dec 2005 11:19:56 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=9375&PID=89459&title=whats-a-lux#89459 <![CDATA[what's a lux? : Thanks to Adam letting me borrow...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=9375&PID=89458&title=whats-a-lux#89458 Author: Guests
Subject: 9375
Posted: December 12 2005 at 11:16am

Thanks to Adam letting me borrow his lux meter, I was able to test different lights.  I found that a 55 Watt 10,000K power compact emits 10000 lux at 20 inches.  Now I just need to figure out the UV issues and I'm set.  I assume that I can just get a piece of UV protective glass from a glass company?]]> Mon, 12 Dec 2005 11:16:46 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=9375&PID=89458&title=whats-a-lux#89458 <![CDATA[what's a lux? : we are using it with a timer to...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=9375&PID=88691&title=whats-a-lux#88691 Author: bbeck4x4
Subject: 9375
Posted: December 06 2005 at 6:18pm

we are using it with a timer to have the daylight (simulated) occur at6:00 am, so far its working pretty good, I was having trouble withstaying asleep at night.

Brian
]]> Tue, 06 Dec 2005 18:18:21 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=9375&PID=88691&title=whats-a-lux#88691 <![CDATA[what's a lux? : bbeck4x4 wrote:we have a box...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=9375&PID=88665&title=whats-a-lux#88665 Author: Guests
Subject: 9375
Posted: December 06 2005 at 11:40am

Originally posted by bbeck4x4 bbeck4x4 wrote:

we have a box that is supposed to be used for SAD it has two 65 watt f40bx/spx41/rs bulbs in it, that would be a 4100 k bulbs

Brian

Are you using it?  Do you want to sell it?

]]> Tue, 06 Dec 2005 11:40:23 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=9375&PID=88665&title=whats-a-lux#88665 <![CDATA[what's a lux? : 6500 K is more yellow than 10,000K...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=9375&PID=88616&title=whats-a-lux#88616 Author: faviasteve
Subject: 9375
Posted: December 06 2005 at 1:10am

6500 K is more yellow than 10,000K so it isn't as pretty on a reef tank but the the Iwasaki 6500 K simutates natural sunlight at the surface better than any other metal halide so it should be a super SAD bulb.  Anything between 4000 K and 10000 K is probably OK.]]> Tue, 06 Dec 2005 01:10:15 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=9375&PID=88616&title=whats-a-lux#88616 <![CDATA[what's a lux? : Adam Haycock wrote: Amie,...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=9375&PID=88614&title=whats-a-lux#88614 Author: Guests
Subject: 9375
Posted: December 06 2005 at 12:46am

Originally posted by Adam Haycock Adam Haycock wrote:

Amie, does it say anything about what color of light to use? Id would think a 6500K metal halide would be perfect for that. Hmm maybe a good excuse to buy a pendant for a new frag tank ;)

The only information I have been able to find states that the light needs to be 10,000 lux at 12", properly screen out UV wavelengths, and preferably have  a broad spectrum of color.  ( I guess the color doesn't matter as much.)  I think the idea is to simulate sunlight. 

Is a 6500 K light 'whiter' or more yellow than a 10,000 K light?

]]> Tue, 06 Dec 2005 00:46:23 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=9375&PID=88614&title=whats-a-lux#88614 <![CDATA[what's a lux? : we have a box that is supposed...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=9375&PID=88593&title=whats-a-lux#88593 Author: bbeck4x4
Subject: 9375
Posted: December 05 2005 at 10:27pm

we have a box that is supposed to be used for SAD it has two 65 watt f40bx/spx41/rs bulbs in it, that would be a 4100 k bulbs

Brian


]]> Mon, 05 Dec 2005 22:27:32 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=9375&PID=88593&title=whats-a-lux#88593 <![CDATA[what's a lux? : Amie, does it say anything about...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=9375&PID=88549&title=whats-a-lux#88549 Author: Adam Haycock
Subject: 9375
Posted: December 05 2005 at 3:26pm

Amie, does it say anything about what color of light to use? Id would think a 6500K metal halide would be perfect for that. Hmm maybe a good excuse to buy a pendant for a new frag tank ;)

]]> Mon, 05 Dec 2005 15:26:14 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=9375&PID=88549&title=whats-a-lux#88549