Ultra low profile open top light fixture - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 03-10-2008, 01:48 AM Thread Starter
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Ultra low profile open top light fixture

Here are pictures and comments on a 4 ft. light that I made for my neighbour's 75 gals. tank:
http://picasaweb.google.com/ddasega/DaveS

Bulbs:
1. Two 47 inch long Giesemann Midday T5HO with individual reflectors (110 total watts)
2. Two AtoTlamps 10,000K VHO, 47 inches without reflectors (220 total watts)

The T5s are on the sides, the VHOs are in the middle.

The T5s run off 2 Workhorse 5 ballasts. The VHOs run off one Workhorse 7 ballast.

The VHOs are on 3 hours a day. The T5s are on 11 hours a day. 4 or 5 min. after the VHOs switch on the tank is literally boiling from streams of bubbles running everywhere.

Cost of this project:
1. T5s + reflectors = $80
2. VHOs = $34
3. 3 Workhorse ballasts = $105
4. Electric wire = $20
5. Hardware (tin roof flashing, metal tube, screws, silicone, paint) = $20
TOTAL: about 250

--Nikolay
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post #2 of 6 (permalink) Old 03-10-2008, 02:01 AM
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That is really excellent!

-Charlie


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post #3 of 6 (permalink) Old 03-10-2008, 02:44 AM
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who bent the pipes for you? you should make an instructable on this... (instructables.com)
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post #4 of 6 (permalink) Old 03-10-2008, 03:16 AM Thread Starter
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Ah, instructables.com! My favourite video there is making a chocolate bar with an imprint of Han Solo (or whatever his name is) - at this point I felt I was among true nerds. I love the site, and also metacafe.com.

I think it's a good idea to make a video of how to bend the tubes. Thing is I bought a pipe bender from Home Depot, didn't remove the stickers/instructions, used it for my purposes and shamelesly returned it. A low life eastern european trick, I know. But for bending 2 pipes I think most people would understand. So I own no pipe bender now ... and the greatest pipe-bending video in the world may be delayed a bit...

--Nikolay
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post #5 of 6 (permalink) Old 03-10-2008, 03:23 AM
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Very nice!
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post #6 of 6 (permalink) Old 03-10-2008, 02:16 PM
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Beautiful job, Nikolay! There's just one thing I would do-add a busing to the ends of the EMT wherer the wires go in, just to eliminate worries about chafing.

Tommy

><;;;"> <9))>>{

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Red Turquiose Discus, Japonica shrimp, assorted Blue Eyed Rainbows, Tetras, Hatchets, Danios, Rasboras
10 gal low tech planted Celestial Pearl Danio (Celestichthys margaritatus) & Emerald Dwarf Rasbora (Microrasbora erythromicron)
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