Scratch building a hood; need suggestions - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 06-15-2005, 09:16 PM Thread Starter
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Scratch building a hood; need suggestions

Ok, I'm going to build a hood to mount lights on my 20gal long tank.

It's 30" wide x 12" deep x 12" high? Anyway...I'm going to use CF spiral bulbs for now, and I'm going to router out holes in the plywood to hold the sockets for the bulbs to screw in.

My question would be.

Do you think it would be better to;

A: Line up the three-four bulbs, spaced out so they provide decent coverage in the tank; or

B: Put two bulbs in the back, and one on each side in hopes of getting as decent coverage?

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post #2 of 9 (permalink) Old 06-15-2005, 10:26 PM
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Well, not knowing what your entire setup is consisting of I'd have to say go with "A". It will give you decent coverag and will keep the hood looking much more neat.

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post #3 of 9 (permalink) Old 06-15-2005, 11:38 PM
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It the hood is going to be 12" high you can just mount double ended sockets with a single screw. This might save you some router time and make a transition to PC or ODNO easier in the future.

Moved to Tucson.
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post #4 of 9 (permalink) Old 06-16-2005, 01:54 AM Thread Starter
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Quote:
Originally Posted by BlueRam
It the hood is going to be 12" high you can just mount double ended sockets with a single screw. This might save you some router time and make a transition to PC or ODNO easier in the future.
I like the idea Ram, actually I am going to use PC bulbs...or were you referring to another PC type?

And you are right, the double ended sockets will certainly work better...I didn't think of that right away.
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post #5 of 9 (permalink) Old 06-16-2005, 01:58 AM Thread Starter
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I've read where people have painted the underside of their hood a gloss or semi-gloss white for light refraction?

Is that an easier route? Or would it be better to get a metal refractor for the lighting?
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post #6 of 9 (permalink) Old 06-16-2005, 04:53 AM
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I would go with A and paint a high gloss white to the inside of the hood.


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post #7 of 9 (permalink) Old 06-16-2005, 06:04 AM
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I used aluminium as a reflector in my hood, it works rather well, and as a bit of "belt and braces" technique I sealed the hood's interior with gloss white enamel.

works a treat.


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post #8 of 9 (permalink) Old 06-16-2005, 04:41 PM
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Doh! There are sprial PC bulbs that screw into a standard socket and linear PC bulbs that use a different sytle with remote ballast. While the former (sprial) are used in all but one of my tanks, they tend to be "warm" ie ~4100K. New bulbs at 6700K are hitting the market but they were more expensive last I looked. The other issue is that linear PC with a good reflector cast a rectangle down as opposes to sprials which scatter all directions and thus lose a lot to restrike. You can line the box with Al foil (as rex would say a diffusser, not a reflector), white paint (which can chip) or milar from a hydroponics store (expensive, bounces light around and not down). So build for flexability and experiment until you find what works for you.

Quote:
Originally Posted by woodymdt
I like the idea Ram, actually I am going to use PC bulbs...or were you referring to another PC type?

And you are right, the double ended sockets will certainly work better...I didn't think of that right away.

Moved to Tucson.
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post #9 of 9 (permalink) Old 06-19-2005, 07:50 PM
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PC bulbs

I have some Panasonic bulbs that put out a very nice 5000 K. They emit a nice crisp blue. PART # EFG25E50. Defintely more blue than the standard PC. You may want to check Ebay for Panasonic bulbs.


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