Cool Tube Reflector w/ Ducting?

I've seen grows where they'd have the 6" or 8" cool tube reflector with ducting coming out of both ends, is this necessary? I'm going to be running a 600w mh/hps with the cool tube reflector, but i was just gonna hang it there, it ducting necessary to rid the heat? I thought that's why it was a cool tube

You need the ducting and also an extractor. You "Suck" or "Blow" air through the tube from outside the tent and then expell it outside the tent, so it takes in cold air and puts out the hot air the lamp creates.

Just hanging a cooltube in the tent will have no effect at all ....

It would allow you to get your lights closer to the plants allowing more vigorous growth. & Vent alot of that heat elsewhere.

Earwig1978 said:

You need the ducting and also an extractor. You "Suck" or "Blow" air through the tube from outside the tent and then expell it outside the tent, so it takes in cold air and puts out the hot air the lamp creates.

Just hanging a cooltube in the tent will have no effect at all ....

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What's the cheapest I can get that for, because I've already got like $140 in ducting for intake fans etc. for the room

How does this look as a setup? Just 4 plants, just enough that'll fit in my closet.

That would work, is more elaborate than mine. I have 1 ducting pulling air in through the lights & out of the room.

that is not going to be very efficient...don't have intake and exhaust ducted together. Carbon filter attached directly to your exhaust fan ducted through the cool tube and out into your attic. Intake should be by itself I'd guess.

RawBudzski said:

That would work, is more elaborate than mine. I have 1 ducting pulling air in through the lights & out of the room.

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From the diagram he drew he has intake ducting on one side of cool tube and exhaust on other end...I dont see how that would work at all, it would blow hot air from light out one end only to go right back into closet from intake fan pushing air in through same ducting.

It would work if he re-arranged the fans. the ducting should be fine. If he put both fans @ the attic opening in the proper directions it should work fine. One sucking fresh air into the light/room one sucking air out of the room/light.. But he could do with just 1 duct going through the light & out of the room.

right, he would have to move the exhaust fan up, gotcha

So like that, with the exhaust fan in the attic? Only problem I see now is maybe the air from the hot bulb might go back onto the plants...should I use more than 2 fans or could something be moved better?

Is the room seriously sealed off? like air tight? Why do you need the extra two ducts going in the room, I use 1 fan, to take air in ---> Through the lights ---> out the room in 1 duct..

Just for good air circulation. It's a like 3x3x10 closet leading into the attic. No new air can come through the door holes because I'm covering it up so light can't get through, so I figured that'd be a good way to get air circulating.

Well I believe the most effective way would to use 2x different ducting for the 2x fans separately. would that be able to fit.?.

Well I was trying to do it as cheaply as possible, only using 2 fans. Is the way you're saying, using seperate ducting, using 2 or 4 fans?

And also the second exhaust fan is what runs the smell through the carbon filter.

Use 2 fans for 2 ducts. So you are fine with the fans you have. Just use two separate ducts with 1 fan each

That's not the exact blueprint, I just focused on the mechanics of the air movement. The ducts aren't gonna be angled all every which way like that, but when it comes to a paint drawing that's the best I got haha.

No, now I see three fans. If I were you I'd run the carbon filter = exhaust fan = ducting to cool tube= cool tube ducting to attic. And then just duct fresh air in from your intake fan. This would be cheaper (you wouldn't need any Y connectors for your ducts or anything) and more effective. Of course this assumes you have space to mount the carbon filter and fan (or sit them).

How many cfm is your exhaust fan? An inline would work but you're looking at more ducting also, and may not be necessary if you have a nice inline exhaust fan