Do Current par tests exist on current generation LED's I know somewhere it probablyldoes but i have been out of the game for a few years and am trying to get caught up so any help would be appreciated. Tank info is an All Glass 220 that is being set up for SPS and Clams any suggestions in a Diy way would be much appreciated.
Actual Cree vs Phillips vs Bridgelux
- Thread starter glyle41
- Start date
alpine
New member
I have been trying to find out the same thing,as I am planning on setting up a new tank.Would be nice to be able to get lumen output between the 3 as well.I know most ppl will say just go with the cree led's,but no one has hard evidence that there actually better then the other two.
TheFishMan65
New member
I don't know if Cree produces more lumens, but every time I have sompared them they produce more lumens per watt. So for a given amount of light they are cheaper to run.
rndmcnflct
New member
You won't be running any LED you buy at maximum amperage anyway, so the amount of light they produce individually is not important. For example, I have never heard of someone running a Cree XM-L at 3A for any aquarium application, that would be insane and it would produce way too much light. Efficiency, reliability, and color are the most important properties to look at when buying an emitter.
TheFishMan65
New member
Good point
NatureNerd
New member
Data sheets on all these LED's exist online. Simply look them up. Pay attention to both efficiency and spectral output. Don't ignore reliability data. Then, if you are so inclined, compare that data to absorption lines of the pigments found in zooanthellae and the spectral properties of natural sunlight at shallow ocean reefs. With those four pieces of information you can make comparisons between these vendor's products. Of course the role of protective pigments makes this a touch more challenging. I have been studying this for the last week or so. It is difficult to make hard conclusions.
rndmcnflct
New member
A cree XM-L or a luxeon/cree 3 emitter star would produce the most light. If that's the answer you're looking for you have it. It's meaningless though.
mussel and hate
New member
Unless of course you had a tight cluster of X-MLs on a water block centered high above the tank in a conical reflector like an old-school MH pendant. That is actually a pretty good idea.
I've considered shutting my 120g reef tank down to minimize my hydro costs. I was getting a little tired of paying $400 bi-monthly for electricity!
I'd like to switch my lighting from 2x250W MH and 2x90W atinics to LEDs.
Has anyone had any experience with the Bridgelux LED's ??
Like everyone in this forum as well as others, is there a difference between Luxeon, Bridgelux or Cree's? Do they not all come out of the same factory??
Thoughts??
I'd like to switch my lighting from 2x250W MH and 2x90W atinics to LEDs.
Has anyone had any experience with the Bridgelux LED's ??
Like everyone in this forum as well as others, is there a difference between Luxeon, Bridgelux or Cree's? Do they not all come out of the same factory??
Thoughts??
TheFishMan65
New member
No they do not all come out of the same factory. LED have many factors. Lets start with wavelength. Typically you want mostly royal blue which is around 450nm. Then you add some white (I like neutrals, but other may like something else). Now any 450nm LED will work for the royal blue so how do you pick. Two factors come into play useable light output and price. It has been a while since I compared specs, but IIRC
Bridgelux cost about 1/2 of the cost of a Cree. But Cree produce 50% more light for the same wattage. So 2 Cree = 3 Bridgelux for light output. So assuming you run them at a full 3 watts the Bridgelux us 3 watts more per hour (depends how many LEDs you need).
3 LED watt * 8 hours * 365 * .12 $/ kwatt ~ $1. So depending on the price difference you make it up in a few years.
If you want a more detailed analysis post the specs for the LEDs you are thinking about.
Bridgelux cost about 1/2 of the cost of a Cree. But Cree produce 50% more light for the same wattage. So 2 Cree = 3 Bridgelux for light output. So assuming you run them at a full 3 watts the Bridgelux us 3 watts more per hour (depends how many LEDs you need).
3 LED watt * 8 hours * 365 * .12 $/ kwatt ~ $1. So depending on the price difference you make it up in a few years.
If you want a more detailed analysis post the specs for the LEDs you are thinking about.
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