apparantly all cool tubes are 6" in diameter so i was thinking a Suncourt 6" In-line Duct Fan - 300 cfm would do it...

"Any cooltube fan should be on the cool side, blowing air first over the tube socket and then warmed air dicted out of the grow airspace."

so i should put the fan on the socket side of the tube...got it

do i want alot of ducting attached to the exhaust side? or does that not matter? im thinking it could add resistence and make the fan work harder or not as well. so should the exhaust side ducting just go outside the space and stop? or should i run it a bit farther


thanks for the info i was thrown off by the 8' fan suggestion because theyre so freaking expensive
criom Reviewed by criom on . 600 HPS Cool Tube Grow Light System 600 HPS Cool Tube Grow Light System is the cooltube wired to the right cordset and plugged into the ballast? i really want to order this system, but every company i email eventually tells me "no we dont wire the ballast to the cooltube"... anyone have one from bghydro that could comment ? Rating: 5