Quote Originally Posted by justaseed
i am gonna upgrade my current non-aircooled 400hps hood to a cooltube, thanks for the info, i didn't know what to use for the tube and the cheapest i could find a cooltube online was like $150 for just the tube, mogul socket, and cord.
Seed,

You can get a Pyrex, 4" glass tube from eBay... cheap...
Try

Bake-A-Round
or
Bake A Round