WMAS Discussion Forum : About LEDs

WMAS Discussion Forum : About LEDs http://www.utahreefs.com/forum/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Tue, 14 Jul 2026 22:37:03 +0000 Sun, 04 Dec 2011 13:32:15 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.03 360 www.utahreefs.com/forum/RSS_post_feed.asp?TID=12476 <![CDATA[WMAS Discussion Forum]]> http://www.utahreefs.com/forum/1by1.gif http://www.utahreefs.com/forum/ <![CDATA[About LEDs : This thread is from May 2006...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=12476&PID=442274&title=about-leds#442274 Author: arthuriv
Subject: 12476
Posted: December 04 2011 at 1:32pm

This thread is from May 2006 a lot has change since then!

phys wrote:

Cree also has come out with a 10w XM-L LED that produces 1000 lumens per LED if driven fully. They have a max kelvin rating of 8300.

You might actually be surprised to know that there are 1w, 3w, 5w, 10w and even 20w leds in that range. They might be new to Cree but they have been around. The marine aquarium community might also be surprised to know there are actually other brands of leds other then Cree that are just as good if not better! Cree is only popular because they have been endorsed by the aquarium community. Its like when famuos celebrities talk about a no name product one day and the next day it is a brand name. If you were to poll the marine aquarium community on the best place to buy LEDs and LED components, I bet most of them would name places like Nano tuners, Rapid Led and other aquarium lighting specialist. If I told them I could get those same LEDs to include Cree and LED components for much less they would ask where and when I told them they would say "I've never heard of them, but I'd rather buy from a well know company." The thing with these aquarium lighting specialist is that they are only know to the aquarium community and they are actually buying them from these companies I speak of in the electronics industry.
]]> Sun, 04 Dec 2011 13:32:15 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=12476&PID=442274&title=about-leds#442274 <![CDATA[About LEDs : If you look at the Cree XP-E...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=12476&PID=442235&title=about-leds#442235 Author: phys
Subject: 12476
Posted: December 03 2011 at 10:01pm

If you look at the Cree XP-E 3W cool white leds, there are bins of them that are produced that make the 10k K rating. You have to make sure you get the correct production bin though. Cree also has come out with a 10w XM-L LED that produces 1000 lumens per LED if driven fully. They have a max kelvin rating of 8300. They have slightly better output for the same amount of amperage as compared to the xp-e versions. It comes out to about 1 extra xp-e for the same amount of current so it saves a decent amount of power.

Adding actinic and blue leds raises the "effective" kelvin rating of the fixture... so add more of those and it'll appear more blue. You are, though, cutting some of the light out of the total spectrum so its not truely what you should be getting.

A mix of different LEDs would be the best route to go for LEDs.

]]> Sat, 03 Dec 2011 22:01:07 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=12476&PID=442235&title=about-leds#442235 <![CDATA[About LEDs : I think the LED fixtures that...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=12476&PID=442228&title=about-leds#442228 Author: laynframe
Subject: 12476
Posted: December 03 2011 at 8:53pm

I think the LED fixtures that are not color adjustable are not worth buying. I have owned 2 seprate led fixtures one was from Reefkoi and the output was terrible, the fans ran 24/7 and the noise was crazy! Sent it back after 2 days and got my money back, no problems from them either, they were great to deal with. When I bought my AI's I couldnt beleive the difference! You get what you pay for with leds. I can go from almost a pure yellow light to beyond 22k and anywhere in between. The brightness is crazy, I run my leds at 75 to 80 percent and had to work up to that because the corals were bleaching. ]]> Sat, 03 Dec 2011 20:53:20 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=12476&PID=442228&title=about-leds#442228 <![CDATA[About LEDs : They are already here. And it...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=12476&PID=440962&title=about-leds#440962 Author: 08TRDOFFROAD
Subject: 12476
Posted: November 24 2011 at 7:40am

They are already here. And it has been 5 years roughly since he posted that....]]> Thu, 24 Nov 2011 07:40:50 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=12476&PID=440962&title=about-leds#440962 <![CDATA[About LEDs : Jake Pehrson wrote:I have...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=12476&PID=440954&title=about-leds#440954 Author: mariz
Subject: 12476
Posted: November 24 2011 at 12:44am

Jake Pehrson wrote:

I have been looking at this for years. The luxeon LED s are close, but now quite there yet. For those who went to IMAC we did see som exciting new products that will be coming out soon. Including the luxeon LEDs with multiple LED Lights cast on one die. When this product comes out I think you will start to see the move towards LEDs in reed lighting. That said I think we are 5-10 years away from having a real alternative to Halides (at least a cost effective one).

I think it is more than less than 5-10years away!They are catching up very fast!
]]> Thu, 24 Nov 2011 00:44:46 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=12476&PID=440954&title=about-leds#440954 <![CDATA[About LEDs : thebutler4 wrote:It sounds...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=12476&PID=115603&title=about-leds#115603 Author: Jake Pehrson
Subject: 12476
Posted: May 30 2006 at 12:51am

thebutler4 wrote:

It sounds to me like LED would be the way to go .. however I really think the price would be WAY out of reach for most ...

For now.

]]> Tue, 30 May 2006 00:51:19 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=12476&PID=115603&title=about-leds#115603 <![CDATA[About LEDs : It sounds to me like LED would...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=12476&PID=115580&title=about-leds#115580 Author: ReefBones
Subject: 12476
Posted: May 29 2006 at 6:59pm

It sounds to me like LED would be the way to go .. however I really think the price would be WAY out of reach for most ...]]> Mon, 29 May 2006 18:59:30 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=12476&PID=115580&title=about-leds#115580 <![CDATA[About LEDs : Mark Peterson wrote:Interesting....]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=12476&PID=115578&title=about-leds#115578 Author: Jake Pehrson
Subject: 12476
Posted: May 29 2006 at 6:53pm

Mark Peterson wrote:

Interesting.

LED's are current driven. hmmm.

Could it be that a bank of LED's large enough to produce the light necessary for our aquariumis is going to be drawing as much or more electricity than a MH of the same Lumens/ intensity?

That is an interesting question. In fact, when at IMAC we listened to a talk about the future of reef lighting. LEDs are more efficient then halides and don't put of heat like a halide. That said, with the new LEDs being made they are drawing a lot of current. It was basically said that you may not save a lot in energy cost, but imagine buying a LED bulb that would last you 15 years and never really lose intensity or spectrum and put out essential no heat.

]]> Mon, 29 May 2006 18:53:10 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=12476&PID=115578&title=about-leds#115578 <![CDATA[About LEDs : Interesting. LED's are...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=12476&PID=115532&title=about-leds#115532 Author: Mark Peterson
Subject: 12476
Posted: May 29 2006 at 8:41am

Interesting.

LED's are current driven. hmmm.

Could it be that a bank of LED's large enough to produce the light necessary for our aquariumis is going to be drawing as much or more electricity than a MH of the same Lumens/ intensity?

]]> Mon, 29 May 2006 08:41:44 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=12476&PID=115532&title=about-leds#115532 <![CDATA[About LEDs : Here is a good read for those...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=12476&PID=115521&title=about-leds#115521 Author: Gahlenfr
Subject: 12476
Posted: May 28 2006 at 11:08pm

Here is a good read for those techno geeks out there.

http://www.theledlight.com/technical1.html

]]> Sun, 28 May 2006 23:08:35 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=12476&PID=115521&title=about-leds#115521