Dont even BOTHER trying to get by without ventilation and an enclosed hood of some kind....cool tube or otherwise. We brushed off our hydro man's advice about cooling and found that 1kw HPS can raise the temp of 12 x 14' room a good 20 degrees F. At one point we had the central air running constantly AND a window ac ALSO running constantly and barely kept the temp under control. A good cool tube and inline fan solved the issue completely.
Weedhound Reviewed by Weedhound on . Cool Tube lights and heat signature Hello, I don't know much about cool tubes but it sounds like a great concept. I found some for sale on various websites but don't really know how they work. I saw some duct tube attach to one side of the cool tube. I am guessing that it connects to a fan. Does the other side have ducting attached and what is it for? Also I was interested in the 1000W cool tube light. How serious is the heat signature on something like that? Rating: 5