light conversion
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Category: Specialized Discussion
Forum Name: Equipment
Forum Description: This is the place to ask question about reef equipment.
URL: http://www.utahreefs.com/forum/forum_posts.asp?TID=3087
Printed Date: July 01 2026 at 1:07pm
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Topic: light conversion
Posted By: Adam Blundell
Subject: light conversion
Date Posted: July 26 2004 at 12:35pm
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Lets see, should I say "Jon" or just leave this out for anyone.... hmmm will anyone other than Jon respond??? Can someone please convert these light readings into something more useful for our aquariums? Like can someone convert these into halide watts per square foot or something like that? 80, 200, and 300 mumol m-2 s-1 Thanks Adam ------------- Come to a meeting, they�re fun! |
Replies:
Posted By: Carl
Date Posted: July 26 2004 at 2:17pm
 ------------- In Syracuse "I believe that forgiving them is God's function. Our job is simply to arrange the meeting." - Gen. H. Norman Schwarzkopf |
Posted By: jfinch
Date Posted: July 26 2004 at 3:23pm
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Do you mean umol m-2 s-1? mu=u=micro That is the units of photon flux (PAR or PPFD). I'm pretty sure it is abreviated for microEinsteins/m2/s. The noon sun in the tropics is somewhere on the order of 2000 umol/m2/s Here is a nice article referencing light values in real reef tanks: http://www.advancedaquarist.com/issues/august2003/feature.htm - http://www.advancedaquarist.com/issues/august2003/feature.ht m
------------- Jon https://www.youtube.com/channel/UC6y_EzjI_ljbIwf2n5uNzTw" rel="nofollow - What I've been doing... |
Posted By: Adam Blundell
Date Posted: July 26 2004 at 3:28pm
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I too was puzzled by mumol but I copied and pasted it here. I'm reading an incredible amount of articles right now, and didn't want to take the time to go convert (plus I'd have to figure out what I'm converting). I have no idea where our bulbs in our tanks are, but I thought you would have that info on the top of your head (like you did with the noon sun tropics). By the way, my house was just recently connected to a library server, and it is the greatest thing ever. I've read more in the last 24 hours than I've read in the last 6 months. Adam ------------- Come to a meeting, they�re fun! |
Posted By: jfinch
Date Posted: July 26 2004 at 3:33pm
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I'll do a little searching around later tonight, but it depends on how far away you are from the bulb. That link has some real world data for different bulbs. But I've seen lots of data presented on 250 watt mh 10K bulbs with PAR in the 300 - 500 umol/m2/s range. But I don't know how far away from the bulb this measurement was taken. ------------- Jon https://www.youtube.com/channel/UC6y_EzjI_ljbIwf2n5uNzTw" rel="nofollow - What I've been doing... |
Posted By: jfinch
Date Posted: July 26 2004 at 3:34pm
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By the way, my house was just recently connected to a library server You know I'm really jealous now!!! Can you do abstract searches? ------------- Jon https://www.youtube.com/channel/UC6y_EzjI_ljbIwf2n5uNzTw" rel="nofollow - What I've been doing... |
Posted By: Adam Blundell
Date Posted: July 26 2004 at 3:43pm
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Jon, I just finished reading that article. Thanks, that is awesome. I like that article more than any of other Sanjay articles. I like the numbers on the pics, very helpful. I am so in favor of the club buying a photometer sometime. Adam ------------- Come to a meeting, they�re fun! |
Posted By: Adam Blundell
Date Posted: July 26 2004 at 3:44pm
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Jon, Yes I can. I've printed more abstracts and articles than you can imagine. My eyes are fried, and my highlighter is running low. Not kidding, I've read more about photosynthesis today than I did during a semester of plant biology. Adam ------------- Come to a meeting, they�re fun! |
Posted By: Jake Pehrson
Date Posted: July 26 2004 at 4:17pm
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Adam, Do you have access to BIOSIS and/or the Scientific Journal Coral Reefs? If so I may come and live at your house (if that's okay). ------------- Jake Pehrson Murray http://coralplanet.com" rel="nofollow - coralplanet.com http://utahbeeranch.com" rel="nofollow - :) |
Posted By: rstruhs
Date Posted: July 26 2004 at 4:47pm
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Here's an interesting link: http://www.gbif.org/GBIF_org/what_is_gbif - http://www.gbif.org/GBIF_org/what_is_gbif ------------- Rodney, Sandra, Jeffery, and Laura Struhs South Jordan, Utah 98th South & 40th West. (801) 282-2744 75 gallon reef 55 gallon reef 55 gallon FOWLR 20 gallon FOWLR |
Posted By: Adam Blundell
Date Posted: July 26 2004 at 4:51pm
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Jake, I live on Biosis. I'm on that search oh.... about 6 hours per day here at work. And now, yes about 6 hours per day at home. I didn't know anyone knew what Biosis was, other than me. Wow, you are pretty nerdy. Adam ------------- Come to a meeting, they�re fun! |
Posted By: Weimers
Date Posted: July 26 2004 at 5:49pm
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Ditto to Carl's post. Maybe you guys could give us the laymen's version someday..? Renee |
Posted By: jfinch
Date Posted: July 26 2004 at 9:24pm
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So Adam, how do I tap in That's a very nice perk, imo! ------------- Jon https://www.youtube.com/channel/UC6y_EzjI_ljbIwf2n5uNzTw" rel="nofollow - What I've been doing... |
.Posted By: Adam Blundell
Date Posted: July 26 2004 at 10:03pm
Yeah perk, lets call it that (sounds better than addiction)..... I'm more like a junkie working in a crack factory. I tell yah, I spend way too much time reading articles. Adam ------------- Come to a meeting, they�re fun! |
jfinch wrote: