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Medijuana · #35 (**permalink**) 03-07-2009, 10:04 PM

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!

#35 (permalink) 03-07-2009, 10:04 PM
Medijuana Caregiver Join Date: Mar 2009 Location: Back In The Old School Posts: 18	Re: DIY: Best Cool Tube 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!