hahnmeister
In Memoriam
Seen these spotlights? I was considering a couple of the 120 LED floods and a couple of the 60LED saphires to light a 20H...I wonder if it would work... http://autolumination.com/home.htm
Revolutionary New Lighting System ?
- Thread starter beefcake
- Start date
hahnmeister
In Memoriam
this one only uses 6 watts....
http://www.besthomeledlighting.com/product/PAR38-120-E27-W-165-
or how about a track of these across a tank...
http://www.besthomeledlighting.com/product/PAR20-120-E27-S-36-
and then there is this place...
http://www.theledlight.com/
If you look here, you can actually buy luxeons ready to mount in a socket...hmmmm....http://www.superbrightleds.com/edison.html
http://www.besthomeledlighting.com/product/PAR38-120-E27-W-165-
or how about a track of these across a tank...
http://www.besthomeledlighting.com/product/PAR20-120-E27-S-36-
and then there is this place...
http://www.theledlight.com/
If you look here, you can actually buy luxeons ready to mount in a socket...hmmmm....http://www.superbrightleds.com/edison.html
Beenalongtime79
New member
Definitely going to take a wait and see approach on this one... haha, plus I'm broke so I guess even if I wanted to an early adopter, I couldn't. Haha
Peace,
John H.
Peace,
John H.
mattgreene22
work in progress
I'm not sure 90% after 3 months (1000 hrs) is good.....but I do think 80% after 2.5 years (10000 hrs) should be.
hahnmeister
In Memoriam
many HQI/DE halide setups have losses of 10% after a whole year...10% in 3 months is not do great (not totally uncommon either).
I don't know which lamps you're referring to, but a quick search found this info -
Typical LLD (Lamp Lumen Depreciation) figures at 40% (the mean loss point) of rated lamp life. (from http://www.lightsearch.com/resources/lightguides/lightloss.html)
F32T8, 85 CRI 0.91
F96T12/CW "Slimline" 0.88
F96T12 "Slimline," 85 CRI 0.94
F96T12HO/CW 0.83
F96T12/HO, 85 CRI 0.90
Compact fluorescent 0.85
Mercury vapor 0.79
Metal halide 0.83
High pressure sodium 0.91
ie the above figures are how much of the initial lamp lumens remain after 40% of the lamps rated life. Typical rated lives are around 20000hrs for T5, 12000hrs for PC, 12000 for MH etc (from manufacturer websites)
I verified this on GEs lighting website which has graphs and tables of the same thing. A quick look at their MH and PC lamps showed ratings for various types of between 7500 to 20000 hours rated life. They also specify the initial and mean (at 40%) lumens for their lamps so some quick calcs confirm the 0.83 for MH/PC in the list above.
What this means is that basically most MH/PC (with a typical rated life of 12000 hours) will be at the 0.83 level at around 15 months and from the PC graphs on GEs site it looks like the 0.9 mark is at around 20% of lamp life or 8 months.
This is reasonably comparable to the LEDs data in the short term, but long term the LEDs are far better (as far as lumen output goes).
Now what the $ compararsons would be taking into account start up costs, replacement costs over the long term I haven't figured out.
Typical LLD (Lamp Lumen Depreciation) figures at 40% (the mean loss point) of rated lamp life. (from http://www.lightsearch.com/resources/lightguides/lightloss.html)
F32T8, 85 CRI 0.91
F96T12/CW "Slimline" 0.88
F96T12 "Slimline," 85 CRI 0.94
F96T12HO/CW 0.83
F96T12/HO, 85 CRI 0.90
Compact fluorescent 0.85
Mercury vapor 0.79
Metal halide 0.83
High pressure sodium 0.91
ie the above figures are how much of the initial lamp lumens remain after 40% of the lamps rated life. Typical rated lives are around 20000hrs for T5, 12000hrs for PC, 12000 for MH etc (from manufacturer websites)
I verified this on GEs lighting website which has graphs and tables of the same thing. A quick look at their MH and PC lamps showed ratings for various types of between 7500 to 20000 hours rated life. They also specify the initial and mean (at 40%) lumens for their lamps so some quick calcs confirm the 0.83 for MH/PC in the list above.
What this means is that basically most MH/PC (with a typical rated life of 12000 hours) will be at the 0.83 level at around 15 months and from the PC graphs on GEs site it looks like the 0.9 mark is at around 20% of lamp life or 8 months.
This is reasonably comparable to the LEDs data in the short term, but long term the LEDs are far better (as far as lumen output goes).
Now what the $ compararsons would be taking into account start up costs, replacement costs over the long term I haven't figured out.
hahnmeister
In Memoriam
I doubt that those figures that GE is providing cover the longevity of HQI/DE bulbs, but I would rather speculate they are talking about SE/probe ballast combos. The last report I saw was that the pheonix 14,000K DE on a HQI ballast only lost 10% after a year. And thats a bluer bulb...I bet there are plenty of 10,000Ks that wear even better than that. The superior construction/firing of DE bulbs and the HQI spec ballasts lends to longevity many times greater than your typical mogul halide that Im sure GE is referring to as Im sure it consists most of what they deal with. Add that to the fact that most people who use SE bulbs here run them horizontal (which actually decreases their life/longevity even more because they were designed to be mounted vertical), the 'real-world' longevity of HQI vs probe start halides is very different. Not even the 'high frequency electronics' of an icecap ballast can save a SE bulb from that.
BubbleMonkeyIII
New member
this is the future of ALL lighting including residential.. and they will produce shimmer in tanks.
LIKE LCD screens wait for it to be perfected and prices to come down.. a light that costs $700.00 now will cost $250.00 in two years from now if this goes the way of MOST technology. Especially when others pile on and competition starts
this is for sure the future right here
LIKE LCD screens wait for it to be perfected and prices to come down.. a light that costs $700.00 now will cost $250.00 in two years from now if this goes the way of MOST technology. Especially when others pile on and competition starts
this is for sure the future right here
Actually yes they do! The company i work for manufactures all kinds of LED lights for boats and trailers. Our engineer has a large test section of our LED lights he leaves on 24/7, and they loose intensity quite a bit. Yes the LED will still light for the time listed, but intensity is greatly reduced with time. I also have this problem on my moon lights at home. i have had them on constantly for a year and a half, and they are super dim now. LED technology is cool, but after talking with the enginer of our company who has done alot of LED light testing, I am not to convinced they would be good for the long use that our reef lighting requires. Next time I am up in Tennessee at our lab I will take some pictures of the LED testing facility. it is 2 4x8 boards covered entirely with our led lights. Some are newer, and some are older. This will show the dramatic intensity reduction over time.
Roland Jacques
Premium Member
keinreis
good info, it looks like wait and see is the right way to look at these lighting systems.
good info, it looks like wait and see is the right way to look at these lighting systems.
hahnmeister
In Memoriam
Well, for that, we need a few other lighting mfg's to jump on board and make competing units...or this idea could end up going the way of beta-max for a while...
wds21921
New member
I don't think we're likely to see that happen. The potential here is much greater and there's little to compete with it in the VHS/Betamax type war.
I've been on at least 10-15 different reef/saltwater websites and everyone is showing interest and asking some very good questions.
After these initial models get released and we begin to get some feedback on them I expect to see a lot more companies jumping on board. To me this is as big a break through as protein skimmers were back in the 80's.
I've been on at least 10-15 different reef/saltwater websites and everyone is showing interest and asking some very good questions.
After these initial models get released and we begin to get some feedback on them I expect to see a lot more companies jumping on board. To me this is as big a break through as protein skimmers were back in the 80's.
hahnmeister
In Memoriam
If you havent seen it already... very interesting...
http://www.advancedaquarist.com/2006/8/review2
http://www.advancedaquarist.com/2006/8/review2
AcroporAddict
There is no substitute.
Bud, your post is the first one in this thread in 5 years. Might wanna post a new thread in this same forum. Or do a search under "LED", and you'll get more info than you can handle.
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