What's new

How to hang a second light inside a cool tube

SmokinErb

Member
What kind of cool tube?

If it's just a regular, one, I don't see how.... They're like 18" long or something? 400w bulbs are like 10"
 

aligee

Well-known member
Veteran
pretty simple bro just measure n drill a hole on metal end of cooltube attach a 'L' bracket
to socket and tube simple as that I use a cooltube with a mh ushio n hps ushio works lovely !!!
 

SmokinErb

Member
Interesting. I know they make like 30" tubes for 2 bulbs....

Those two that close together aren't going to.. hurt anything is it? I'm asking because I was considering doing the same thing. Those bulbs are basically touching. So far so good, I take it.

What about light loss? I know you lose a bit of light in 8" air cooled reflectors as opposed to 6" just because more of the light goes out the vent hole. Usually cool tubes are mounted so the bulbs are more or less in the middle preventing this loss.

Always wondered if it was of any significance or not.

Another thing I'd do is flip the orientation around. HPS above the MH.
 

ShroomDr

CartoonHead
Veteran
SunSystem brand cooltube ...
You are the fucking man! (or woman!)

I mounted the socket to the center a round 8" end cap. I cut out two half moons, leaving about a 2.5" strip of metal in the middle. This strip is what i mounted the cordset to

Once i finished, I was afraid the bulbs would be too close (I used a sunleaves socket cordset, which is longer than most).
And i was unsure of mounting the bulb 'socket down'.

Your picture addresses my concerns. thank you very much.

Do you have a 6" or 8" tube, Ive got the 8" (and mixed spectrum).
 

ShroomDr

CartoonHead
Veteran
thanks again, i just finished. 4 screws to hold the cap together, and 3 screws to hold the cap to the cool tube. The bulbs are 2-2.25" apart.

It should also be noted, this would have to be mixed spectrum. I dont see how you could put two HPS bulbs in there.
 
Top