Quote Originally Posted by aquanaut
I used to run a 6" cooltube, yes it was great at taking away the heat. But it had some down sides. Cooltubes create hot spots and dont really spread the light. They are great at focusing in 1 area but if you have 9 pots in 3x3 grid only the middle one will get the punch.



:hippy:
This is very true!!! Loved my cooltube..kicked ass temps wise, it couldn't spread the light like i wanted to. I picked up a magnum xxxl 6'' off craigslist today for a steal...brand new half price...love it. The magnum raised my temp 2 deg and kills the tube in light spreading. I still have to get a spreader also. I'll keep the cooltube for my veg room.