Very Cool LED's!!!

[albert_dao]

24" spread back to front.

[Ron99]

Originally Posted by albert_dao

24" spread back to front.

I see that is what they say but I still would like to see PAR measurements. There will be a drop off in intensity off center and PAR may only be good in the middle 10 to 12 inches of the tank. It's a compromise. Try to get wider coverage by skipping optics and you have less penetration and lower PAR at depth. Add optics and you need more emitters to cover the tank.

I really don't understand their layout. I have a 48" array using 80 LEDs spaced over the whole 48" by 15". They have 128 LEDs in their 48" array all clustered down the center. Maybe that's how they get the PAR up without optics; by using so many more LEDS. But they probably could have accomplished the same thing using fewer LEDS spaced more evenly with optics thus using less energy and keeping the cost down a bit.

Personally I would wait to see some independent reviews and PAR measurements before spending that sort of money on this fixture.

[StirCrazy]

Originally Posted by Ron99

I really don't understand their layout. I have a 48" array using 80 LEDs spaced over the whole 48" by 15". They have 128 LEDs in their 48" array all clustered down the center. Maybe that's how they get the PAR up without optics; by using so many more LEDS. But they probably could have accomplished the same thing using fewer LEDS spaced more evenly with optics thus using less energy and keeping the cost down a bit.

Personally I would wait to see some independent reviews and PAR measurements before spending that sort of money on this fixture.

I wonder if they are alternating the angles of the LEDs so the first one shines back, the next one center then next one front ect.. this will give them a sleaker look, alows the use of optics but still maintain PAR on the edges good. this is actualy how I was going to do mine.. guess I can't do it that way if some one is already doing it, got to think up something different again now

Steve

[Ron99]

Originally Posted by StirCrazy

I wonder if they are alternating the angles of the LEDs so the first one shines back, the next one center then next one front ect.. this will give them a sleaker look, alows the use of optics but still maintain PAR on the edges good. this is actualy how I was going to do mine.. guess I can't do it that way if some one is already doing it, got to think up something different again now

Steve

Doesn't look like that's how they are doing it and I believe I read that it uses no optics.

[Ron99]

Just to add it looks like circular clusters of 8 LEDs every 6 inches down the center.

[StirCrazy]

Originally Posted by Ron99

Just to add it looks like circular clusters of 8 LEDs every 6 inches down the center.

ya, what I ment is they could be milling a circle into it that has a slight angle profile. wouldn't take much and would hardly be noticable from any more than a couple feet, but untill some one buys one who knoes.

Steve

[Ron99]

Originally Posted by StirCrazy

ya, what I ment is they could be milling a circle into it that has a slight angle profile. wouldn't take much and would hardly be noticable from any more than a couple feet, but untill some one buys one who knoes.

Steve

I would say probably not as they say the modules are replaceable. To me that says each one is a single circular MCPCB holding the emitters and I think it would be very difficult and costly to have those made angled or contoured rather than flat.

I suspect they are just clustering as many LEDS together as possible to increase the output in the assumption that the lack of optics will provide enough spread. In the end it may well work for many people as most probably have their SPS in the back and center part of the tank anyhow and the front is usually free of corals or has lower light corals further down. So perhaps they figured it will work for a good proportion of tanks. But its not how I would want to do it. I have the same size array using nearly 40% fewer LEDS and electricity with a much more even spread of light.