Cool tube is the shit for a tent for sure. Shotgun that hot air straight out.. I'm an old dog and still don't think these LED equal a good old HID light. Well, unless you got acouple grand extra laying around to get a proper light. HID,, a good bulb costs what 30$ ? and less than 200 more for a ballast and acool tube. Done deal. And anew 30$ bulb every year or so. I am going to try one of these LED's in a small tent I have in abit. Tent is 18"X32" 5' tall mother' tent. I do know people do real well with LED,, but they have a good penny tied up in LED lighting. Keepem Green