Reefbreeders/(Evergrow OEM) Fixtures D120/IT20** series

[dja1980]

Thanks... that's pretty good, and I remember seeing that earlier in this thread. From what I've read, LED's drop off in par pretty fast at some point. I'd just like to see where that point is. Unfortunately, this is a little more difficult to test since someone would need a pretty large tank, trough, or pond to really see the limits of the fixture.

I'm just a little conflicted because I read in several posts that the 32" x 8" fixture won't grow SPS on the edge of a 48" tank, but then I read that the 16" x 8.5" will properly light a 36" x 24" area. This suggests that it will light an additional 10" from all edges of the fixture, but this would also suggest that the 32" fixture would properly light 52" x 28", which we know isn't the case.

 

[Ron Reefman]

RonReefman is crabby:fun2::blown:....................It's Monday morning.....................LOL:dance:

Not crabby, just a fan of quality customer service. I'm just saying I got better service and response from EG than from anybody else selling their fixtures. :love2:

 

[JimXRS]

So, that means two D120 fixtures will properly light my 36" x 36" tank. That's pretty cost effective.

 

[dja1980]

Yeah, just looking back at everything I've read, it seems to make sense that these fixtures will properly light roughly 6" from all edges of the fixture.

Fixture .....Spread
17" x 8".....29" x 20"
24" x 8".....36" x 20"
32" x 8".....44" x 20"

So, if I were to purchase 2 of the 17" units @ 4" apart, the spread would be:
6"+17" + 4" + 17"+6" = 50" x 20"

Of course... this is just speculation on my part, but would support why 2 units would be better on 48" tanks as opposed to using a single 32" fixture.

Edit: Jim, maybe (2) 24" units might be better if you want to grow SPS on all 4 edges of a 36" x 36"? Placing side-by-side @ 8" apart:
Length... 6"+8" + 8" + 8"+6"... = 36"
Width.... 6"+24"+6" ............. = 36"

Of course, that's not nearly as cost effective as using the Value fixtures.

 

[jthunder]

Just to add to the confusion, the optic angle and distance from the water will have a significant impact. I ordered two of the value fixtures with the 120 degree lenses for my 72'" x 24" x 32" 240 gallon. I have a big brace in the middle (12"), and hope to mount it about 8" above the water. I was hoping that the light angle would get most of the bottom of the tank, but it looks like I might have to adjust that now.

 

[Reef_Breeders]

Not crabby, just a fan of quality customer service. I'm just saying I got better service and response from EG than from anybody else selling their fixtures. :love2:

Probably because they pay employees specifically to do that for 8 hours a day. Most retailers, including us, are too small to pay $50,000 a year plus benefits on customer service. (Cheaper in China as well) So keep that in mind, we do the best we can.

 

[Redngold]

I didn't have any issues with customer service when I ordered my photon32 in January. All my emails were answered within a day and Logan has a good presence here on AC. Not sure what else they could do.

 

[meshwheel]

Faster logan faster......................lol
logan please do not get an y sweat droplets in the value fixtures. They are still in my running to purchase.........................lol

 

[Spazdad]

Reef breeders. What would you suggest for my 72"x36"x36" I would like to stay programmable. Would 1 controller program all fixtures. I'm assuming I would need 3 32" photons sideways.

 

[dja1980]

Just to add to the confusion, the optic angle and distance from the water will have a significant impact. I ordered two of the value fixtures with the 120 degree lenses for my 72'" x 24" x 32" 240 gallon. I have a big brace in the middle (12"), and hope to mount it about 8" above the water. I was hoping that the light angle would get most of the bottom of the tank, but it looks like I might have to adjust that now.

True... I should've noted that I was thinking 90* optics. I'm guessing that 120* optics would give you 8" off of each edge? This would also make sense for making the 32" fixture work for a 48" tank... 8"+32"+8" = 48" However, with this setup, you would lose punch on the lower edges of the tank.

Even if you use 2 Value fixtures @ 12" apart on a 72" tank with 120* optics, I would think that you still won't have enough spread if you want 100% SPS...
8"+17" + 12" + 17"+8" = 62" x 20"

Plus, I don't think you would want to use 120* optics on a 32" deep tank.

 

[jthunder]

Well I can always order another Value Fixture if I need three instead of two, but the middle fixture would be trying to shine through the brace ~not ideal~

 

[dja1980]

Reef breeders. What would you suggest for my 72"x36"x36" I would like to stay programmable. Would 1 controller program all fixtures. I'm assuming I would need 3 32" photons sideways.

My guess is (4) 24" Photons mounted side-by-side with 90* optics @ 10" apart:
6"+8" + 10" +8" + 10" +8" + 10" + 8"+6" = 74" x 36"

 

[Reef_Breeders]

Faster logan faster......................lol
logan please do not get an y sweat droplets in the value fixtures. They are still in my running to purchase.........................lol

We got most of the shipment in for the early orders today, I am downing some coffee and getting them ready for shipment.

Reef breeders. What would you suggest for my 72"x36"x36" I would like to stay programmable. Would 1 controller program all fixtures. I'm assuming I would need 3 32" photons sideways.

I would use 3 24s, or 3 32s, depending on the type of corals you have. They can be programmed on one remote, however for initial programming I reccomend stacking the units when you first recieve them, with pieces of foam in between them.

 

[JimXRS]

dja1980, do you have a link to the original thread/article on the 400w XM 20k with PFO ballast? Thats what I currently have but mounting 21" above the water is seriously high.

Thanks,
Jim

 

[dja1980]

I would use 3 24s, or 3 32s, depending on the type of corals you have. They can be programmed on one remote, however for initial programming I reccomend stacking the units when you first recieve them, with pieces of foam in between them.

With the fixtures only being 8" wide, I don't think he will get the spread he needs mounting only 3 of them side-by-side. That would only be 24" of fixture covering a 72" length. I really think he would need a total of 4 fixtures if mounting them side-by-side.

3 x 32" = $1,347
4 x 24" = $1,316

dja1980, do you have a link to the original thread/article on the 400w XM 20k with PFO ballast? Thats what I currently have but mounting 21" above the water is seriously high.

Thanks,
Jim

It was actually a thread discussing the (at the time) new Lumen Bright reflectors. There was a big debate at the time comparing them to the Lumenarcs. People were burning their corals with the new reflectors until they figured out that the Lumen Brights are designed to be mounted much higher than Lumenarcs... very similar to optics today. Here you go...

http://reefcentral.com/forums/showthread.php?t=1211402

 

[ridetheducati]

Probably because they pay employees specifically to do that for 8 hours a day. Most retailers, including us, are too small to pay $50,000 a year plus benefits on customer service. (Cheaper in China as well) So keep that in mind, we do the best we can.

I can imagine you are getting hammered with all the group buys ongoing.

 

[ridetheducati]

Yeah, just looking back at everything I've read, it seems to make sense that these fixtures will properly light roughly 6" from all edges of the fixture.

Fixture .....Spread
17" x 8".....29" x 20"
24" x 8".....36" x 20"
32" x 8".....44" x 20"

So, if I were to purchase 2 of the 17" units @ 4" apart, the spread would be:
6"+17" + 4" + 17"+6" = 50" x 20"

Of course... this is just speculation on my part, but would support why 2 units would be better on 48" tanks as opposed to using a single 32" fixture.

Edit: Jim, maybe (2) 24" units might be better if you want to grow SPS on all 4 edges of a 36" x 36"? Placing side-by-side @ 8" apart:
Length... 6"+8" + 8" + 8"+6"... = 36"
Width.... 6"+24"+6" ............. = 36"

Of course, that's not nearly as cost effective as using the Value fixtures.

The D120 fixture is 16" x 8", but the LEDs are emitting from an 5" x 11" area.

I am using two D120s to light an area of 24" x 36". SPS dominated.

Sorry if I posted this before, but this is my rule of thumb:

D120 with 90 degree optics mounted 10": SPS 18"x18" spread and mixed reef 24"x24" spread.

 

[bhazard451]

I can imagine you are getting hammered with all the group buys ongoing.

I think its a great thing for two reasons.

1. The lights are finally getting recognition as very good LED fixtures for the price.

2. It will force the industry to re-evaluate trying to shove expensive, sub-par fixtures down our throats, expecting us to upgrade annually, and to be their beta testers while they profit.

 

[dja1980]

The D120 fixture is 16" x 8", but the LEDs are emitting from an 5" x 11" area.

I am using two D120s to light an area of 24" x 36". SPS dominated.

So it might be safer to say that the light will spread +8" from the edge of the LED area using 90* optics... I just came to the conclusion using the edge of the fixture based on information posted here. Either way it should come out about the same, and I'd like to come up with a general guideline for people to use when ordering / positioning these fixtures.

 

[~RuSh~]

I like this 'formula'. It simplifies things a bit (perhaps more than intended) but it could potentially be an easy way for buyers to decide which fixtures are right for them.

What depth are you giving for this formula to be effective?