Air cooled hood from gutter?

[Csaocsao]

Hi,

I was just thinking about what would be the cheapest option to make a cooled hood and suddenly I found a thread on an aquaristic forum about making home made light system. There was a guy who expressed his idea about a cheap hood made from gutter. Almost any gutter is perforated on the sides so you can easily adapt the glass to the bottom and it's perform perform as a reflector(ok, not a bat wing performance:)) cause its reflective material(some kind of aluminium). The Ends are closed so you can make a "fixture" with a little work. What do think?

[Zandor]

Most gutters I know of are only 4" wide that would make the light very small. What about building a cool tube using Bake-A-Rounds? There are a few threads and even an FAQ on that subject.

[Csaocsao]

Do you mean area coverage would be small?

http://www.head-shop.de/images/product/04115/04115.jpg

I think they're equal in size. Bake a rounds are nice but the shipping(20-30) make them expensive.

[Zandor]

But is it deep enough to hold the bulb, glass and still have room for proper air flow all around the bulb?

The focal area yes it would be smaller.