Cool Tube

my 400w hps gettin too hot...
i wanna use cooltube....is really make a difference ?
anyone using cooltube...pls reply

i made my one from a reflector i had.i made a hole for the aluminium tube thats atched to a exsoust fan and a hole on the side of the reflector and it works my temp is 25c ,i can feel the hot air on the other side of the fan that its pushing out

how u made it ?

Get a "bake a round" off eBay. Then you cover your light with it and add some ventilation. Viola project done. And yes they work quite well if you have them setup properly.