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Old 11/05/2017, 12:20 PM   #1
Timfish
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Rimless w/ Remote Lighting

I recently was given the challenge of setting up a reef system with custom recessed lighting 5 1/2' away from the tank. Using off the shelf and custom components we built three 250 watt fixtures. LEDs are CREE XPG2 and XPGE2, Count per each fixture is 27 CW, 6 NW, 21 RB and 24 B.

Woohoo! Using 16 optics we we're able to get very focused lighting
http://s3.amazonaws.com/arcipsbucket...11aeb9df0c.jpg
http://s3.amazonaws.com/arcipsbucket...53ebb2fe0c.jpg
http://s3.amazonaws.com/arcipsbucket...4e300d857a.jpg

Here's a view of the tank and lighting. Lights are recessed into the bottom side of a balcony 5' above and set back about a foot from the front. Distance to the front top edge is 5 1/2'. Ceiling above the tank is 18' and keeping the area completly open was a requirement so hanging pendants was not an option.
http://s3.amazonaws.com/arcipsbucket...f48b4d831a.jpg

Here's PAR from the front:
http://s3.amazonaws.com/arcipsbucket...279ca5c9b8.jpg

Here's PAR looking down from the top:
http://s3.amazonaws.com/arcipsbucket...637bf7b367.jpg

Another challenge is the system gets about 1 hour of sunlight each day. Combined PAR is over 900 at the top of the aquascaping so LED cannot be on during that time. It's also been interesting to see what corals do not like getting any sunlight so there's a bit of hit and miss we don't usually have.

Here's a video:
https://youtu.be/Oaf3pCvBzX0


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Old 11/05/2017, 02:02 PM   #2
billdogg
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Very nice job!


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Current Tank Info: 120 mixed reef with 40b sump, ASM G2 skimmer, AI Sol Blue x 2, and a 60g Frag Tank with 100g rubbermaid sump. 2 x Kessil A360w lights, no skimmer (yet)
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Old 11/07/2017, 02:21 PM   #3
Subsea
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Tim,

You do beautiful work.


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Old 11/07/2017, 02:40 PM   #4
zooman72
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I concur - very nice work with the lights and the aquarium, but maybe a longer video...


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Old 11/07/2017, 02:50 PM   #5
der_wille_zur_macht
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I've always wanted to do something like this.

I'm surprised at the wattage it took.


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Old 11/07/2017, 07:48 PM   #6
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Thank ya'all!


Quote:
Originally Posted by der_wille_zur_macht View Post
. . . I'm surprised at the wattage it took.
In hindsight the fixtures probably would have been bright enough at ~200 watts. What I was concerned about designing them was being at an angle there would be more a higher percentage of light reflected off the surface than if they were directly above. I also had not messed with such tight optics before and in case they didn't perform as hoped I wanted to be sure to have enough light.


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Old 11/07/2017, 08:00 PM   #7
der_wille_zur_macht
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Any issues with the lights dazzling people who accidentally look up? I thought about high mounted lights over my 360 but opted for a canopy instead because I was concerned about kids standing next to the tank looking up at the lights.


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Old 11/09/2017, 07:22 PM   #8
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Quote:
Originally Posted by der_wille_zur_macht View Post
Any issues with the lights dazzling people who accidentally look up?. . .
Naw, they're dazzled by the brilliance of the tank.
One of the things I didn't appreciate worrying about the location of the lights was since they are above or slightly behind standing in front of the tank there's no glare from them like pendant style fixtures hung directly above the tank. When approaching the tank from the upper level the reflection off the surface is pretty bright until you lean a bit over the railing to look down. In the video you can see even moving just a couple feet the reflection of a fixture notcibly dims giving an idea of how focused they are. But if one does look straight up it's like looking straight up at the sun.


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Old 11/09/2017, 07:28 PM   #9
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A Reef in Sunlight

Quote:
Originally Posted by zooman72 View Post
. . . but maybe a longer video...
I'll work on it but here's a short video with just sunlight:
https://youtu.be/JAQhfMwC0FE

And here's one looking down at the clownfish:
https://youtu.be/mllKfOYCNb4


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Last edited by Timfish; 11/12/2017 at 08:37 AM. Reason: Better video
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Old 11/10/2017, 05:36 PM   #10
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Odd what the sunlight-only video does to the appearance of the aquarium, isn't it? Water look so cloudy and green...

Fish look nice and plump though...


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Old 11/12/2017, 08:46 AM   #11
Timfish
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Quote:
Originally Posted by zooman72 View Post
Odd what the sunlight-only video does to the appearance of the aquarium, isn't it? Water look so cloudy and green...

Fish look nice and plump though...
Yeah, the mid morning sunlight has a lot of yellow and red spectrum in it which some corals don't like. I haven't been able to keep any blue anchor anywhere, internal reflection seems to give it too much yellow/red light everywhere I've tried it, and frogspwn only does well where it only gets reflected sunlight. The purple stylo on the other hand seems to love it. It does make the red corals stand out better though.

Fish do get fed a bit.


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Old 11/14/2017, 10:50 PM   #12
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. . . Hey! . . . It's my turn!

https://youtu.be/NlvDVVxXfC4


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