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Old 03-08-2009, 06:51 PM
NewbieG is offline  
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NewbieG
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Join Date: Oct 2008
Posts: 7
Re: DIY: Best Cool Tube

Quote:
Originally Posted by Medijuana View Post
NewbieG:

What type of 600 watt bulb are you using, (MH or HPS & what brand), for sizing referance, (or better yet can you also take measurments of the bulb itself, Dia. & Length). Also if you have the ability, what kind of temperature is the exterior of the tube hitting after about a 1/2 hour runtime?

I am interested in connecting two of these in series with a 600 watt hps in each and hanging the pair vertically, (as in a vertical grow for flowering). Was wondering if the diameter of the Pyrex Bake-A-Round tubes can handle the heat from a dual setup as described?

duckfool:

Thank you VERY much for the informative instructions, parts list, photo's, etc... Good job!
I'm actually not using a bake around. I'm using a 10 inch candle hurricane shade, but I would realy suggest using a 14 inch one. The 10 inch one fits my 600 watt bulb after all was said and done but its just barely. I am probably loosing a few lumens. I was actually thinking of attaching two of them together so that I could have dual spectrum 400 watt and 600 watt bulbs, but you are going to have to attach the two glass shades and are going to have to cover a good part of it with tape to make it work. Maybe thats where your second light could start. Here a link of a hurricane shade I would suggest. I have no relation with them, just really cheap stuff.

hxxp://www.save-on-crafts.com/hurcanshad14.html

change the xx to tt. They also have the 10 inch shade I used if you want a straight cooltube.
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