Ventilation
- Thread starter GibbsIt89
- Start date
Dr. Who
Well-Known Member
You should not exhaust through your lighting as that will simply get your lighting dirty and reduce the lights effectiveness. The light cooling should come from outside the tent or area and you would use a separate exhaust system. Plug it in with your light timer.
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GibbsIt89
Well-Known Member
I've already gone over this with a couple people. I kind of just wanted to see the pole results lol. Originally I had a 400watt and everything was fine, had it filter to fan to cooltube exhausting out my window.. which I was given shit for, and was told I should have it as dr. who says (filter cooltube fan). I set it up filter to fan to cooltube because this way I have direct suction from the filter and am blowing the cooler air over the light. The other way I figured I would be causing my fan to work harder while also running hot air through it. Also, if there were any leaks in the ducting I would be sucking non scrubbed air.
I wanted to jump up to the 600watt. Have had temp problems obviously. I would love to directly cool my light but the cold winter air will destroy everything with its moisture. I also can't cool it with the bedroom air because its not cold enough obviously. So I left everything the way it was but just added a 100cfm duct fan directly hooked up to my window bringing in cold air. This worked minus a few issues. The ducting for the cold intake would build up ice in the bedroom causing water to leak on stuff, the bedroom began to get uncomfortably cold, and the tent would get to cold at night even though I had the intake fan on the same timer as the light. When this WAS working to my liking, it aloud me to bring the light closer.
If I could have it with just the flap open for intake at night and then have cold fresh intake from my window during the day that would be ideal. But I'm not going to tend to my grow every time the light goes on or off. SO, I raised my light and got rid of the intake.
NOW my question is... Should I continue with the 600w at a high height and semi-high temps or should I put the 400w in and put the light right nice and close??? Im assuming people will say keep it going with the 600w with the light up high lol.
Again, this wasnt really about my grow so much. It was more to see people argue about what set up is better. Physics will say it is more energy efficient to pull then to push... again though, I think my fan would be working harder, I wouldnt have as much suction from my filter, Id be sucking out unscrubbed air if there were any leaks and my light might not be as cooled?
Cheers!
I wanted to jump up to the 600watt. Have had temp problems obviously. I would love to directly cool my light but the cold winter air will destroy everything with its moisture. I also can't cool it with the bedroom air because its not cold enough obviously. So I left everything the way it was but just added a 100cfm duct fan directly hooked up to my window bringing in cold air. This worked minus a few issues. The ducting for the cold intake would build up ice in the bedroom causing water to leak on stuff, the bedroom began to get uncomfortably cold, and the tent would get to cold at night even though I had the intake fan on the same timer as the light. When this WAS working to my liking, it aloud me to bring the light closer.
If I could have it with just the flap open for intake at night and then have cold fresh intake from my window during the day that would be ideal. But I'm not going to tend to my grow every time the light goes on or off. SO, I raised my light and got rid of the intake.
NOW my question is... Should I continue with the 600w at a high height and semi-high temps or should I put the 400w in and put the light right nice and close??? Im assuming people will say keep it going with the 600w with the light up high lol.
Again, this wasnt really about my grow so much. It was more to see people argue about what set up is better. Physics will say it is more energy efficient to pull then to push... again though, I think my fan would be working harder, I wouldnt have as much suction from my filter, Id be sucking out unscrubbed air if there were any leaks and my light might not be as cooled?
Cheers!
butsack
Well-Known Member
as I understand it ideally you want
[filter][fan][600w]==ll=[exhaust]
it doesnt make that big of a difference IMO.
I have kept two 600w's at 77F with a 450cfm vortex like this:
[filter]=[600w]=[600w]=ll=[fan]=exhaust
it really doesn't matter very much at all.
you don't need cold air to keep your lights cool. Why don't you exhaust your filtered air into your bedroom and keep it warm?
kiwipaulie
Well-Known Member
You should not be sucking hot air through the fan. You can potentially risk a fire some day an the parts will slowly degrade over time.
Fan is meant to go before the cooltube.
Fan is meant to go before the cooltube.
butsack
Well-Known Member
i have ran the same vortex fan at the end of the line for 6 years.
kiwipaulie
Well-Known Member
im not saying it will make an issue, it just makes it a weaker link if other stuff fails around it
GibbsIt89
Well-Known Member
This will keep the room warmer yes but my issue would still be that it gets too cold in the tent with the light off. (This being if the intake was still hooked up, and if it wasnt then the room would get too warm and the tent would get too warm). I think im stuck with the light up really high. And yes thats what I have thought all along, it really doesnt make that much of a difference. I preferred it at the beginning, then I dont run hot air through the fan and dont suck out non scrubbed air.
GibbsIt89
Well-Known Member
They started their 4th week of flower on Monday. They should be done in a total of 8-10weeks flower time.
GibbsIt89
Well-Known Member
Ok so I got rid of the intake and raised the light as high as I could at 18in away from the canopy. My roommate decided to crank the heat last night so when I checked this morning the canopy temp was 35c!!! He said since the cold weather his room has gotten pretty cold so this would always be a constant battle for temperature. So I hooked up the intake again lol was pretty hot even with that light way up high still, sealed everything up all nice and tight at the window.
This time I put the intake right up into the grow space blowing directly over the canopy. When the light is off I have the intake fan off as well, this still created a problem before due to the exhaust fan still sucking in cold air through the intake ducting. This time Ive left the intake to also be passive so at night incase Im not around to close off the intake now the exhaust fan/filter isnt sucking as much through the intake ducting. As long as I close up the intake ducting then it doesnt form any ice around the ducting. I will be getting insulated ducting regardless just to help. It will get around 14c if I leave the intake duct open when the light is off, if I close it then the temp is around 18-20c. I can't always be around though.
The light comes on at 3am and shuts off at 3pm. I did this originally so that the light was not on during peak electrical hours but turns out we don't pay electricity here, just water lol, Oh well. I'll post some pics of what I did tomorrow. If I could some how set up a flap to open and close on a timer for the intake ducting, that would save my life haha. Been thinking of jimmy rigging one up with a tiny computer motor, switch and timer. With the light on, everything seems good, I have the canopy at 25c and can get the light about a 8-12in away. The temps are good in the bedroom, this should work.. my only issue now seems to be the cold temps at night if the intake ducting is left open. Maybe I should make it even more passive? 14c is pretty cold for these ladies.
Rant over lol
This time I put the intake right up into the grow space blowing directly over the canopy. When the light is off I have the intake fan off as well, this still created a problem before due to the exhaust fan still sucking in cold air through the intake ducting. This time Ive left the intake to also be passive so at night incase Im not around to close off the intake now the exhaust fan/filter isnt sucking as much through the intake ducting. As long as I close up the intake ducting then it doesnt form any ice around the ducting. I will be getting insulated ducting regardless just to help. It will get around 14c if I leave the intake duct open when the light is off, if I close it then the temp is around 18-20c. I can't always be around though.
The light comes on at 3am and shuts off at 3pm. I did this originally so that the light was not on during peak electrical hours but turns out we don't pay electricity here, just water lol, Oh well. I'll post some pics of what I did tomorrow. If I could some how set up a flap to open and close on a timer for the intake ducting, that would save my life haha. Been thinking of jimmy rigging one up with a tiny computer motor, switch and timer. With the light on, everything seems good, I have the canopy at 25c and can get the light about a 8-12in away. The temps are good in the bedroom, this should work.. my only issue now seems to be the cold temps at night if the intake ducting is left open. Maybe I should make it even more passive? 14c is pretty cold for these ladies.
Rant over lol