Cooltube, needs intake?

Discussion in 'Grow Room Design/Setup' started by liermam, Aug 17, 2008.

  1. Hey guys, I made my own cooltube for a 400w HPS using the Bake-a-round method. But since I used the original socket made to attach to my reflector, the cooltube is only open on one end, the exhaust end. Is this a problem? Will it still cool effeciently though it has no fresh intake? Most cooltubes I see are attached on both ends by ducting, especially when strung together.
  2. No picture?
  3. there is absolutely no space on the end with the socket?

    if there is a little will only restrict your airflow. but if you have almost no space at may damage your fan trying to pull air.

    think about it...imagine connecting your exhaust fan to a empty jar......can't pull air so the motor in the fan will break
  4. #4 chemicalcomfort, Aug 18, 2008
    Last edited by a moderator: Aug 18, 2008
    ya if it's air tight, it will only create a vacuum within the light. i would be surprised if it broke your fan though. Worst-case i see it that no heat will be pulled from the light and you'll have wasted a lot of time and money.
  5. cant be shure but looks like a bad idea man
    iven it will drop the temp a bit its totally uneffective
    u need an intake
  6. From what I'm reading, his setup is:

    cooltube > ducting > exhaust

    Although an enclosed system is preferred, I also use air from inside the room/tent to cool the lights. It works.
  7. Alright guys, I'll try to get a picture up. Thanks for the feedback.

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