rob333
Well-Known Member
cheers brutha
how to hookup this ducting?
- Thread starter cbuts05
- Start date
rob333
Well-Known Member
so u wanna conect ur outtake to the hood of your light thats what im getting from this post so u can suck heat out ?
skunkd0c
Well-Known Member
The 8inch fan would be better, 6 inch should still be ok now when its colder during winter
when its hotter outside during summer you might find you wished you had just gone with the 8 inch
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http://www.growweedeasy.com/sites/g...light-mh-hps-exhaust-setup-diagram-simple.jpg
Acorrding to this this is how I should do it? Suck warm air Into filter through hood and outside ?
Acorrding to this this is how I should do it? Suck warm air Into filter through hood and outside ?
Will this be ok with 2 slight bends and 5 ft of ducting so I can have the fan somewhat away from the window or what
skunkd0c
Well-Known Member
yes that is how most folk do it when using just one fan
some folk like to separate the cooling of the light and air changes and use two fans
one of the fans will blow colder air from outside through the light (push)
the other fan will be connected to the carbon filter only this will bring clean air into the space and help with the smell (pull)
skunkd0c
Well-Known Member
yeh you can put a fair bit of ducting on the fans that is what they are designed for they can push/pull air through much more than 5ft without losing too much
Okay would u suggest a 6 or 8 either way I have to reduce it to 6 at window..or squeeze the ducting to make it fit..off to bed reply in am thx
Sire Killem All
Well-Known Member
Filter>Fan>hood>outside. blowing thru the hood causes a slight positive pressure which will cause any leaks ur hood might have to push back into room.
So do u suggest taping and sealing it off
Okay maybe I will just run some extra ducting ..8-6 will be fine right.
Can I keeo at the ducting 6" with an 8" fan?
Blue brother
Well-Known Member
If your going to have 2 fans soon then u may aswell use one to control temps/humidity/odour and 1 to cool the lights with its own fresh air supply
Like this
The carbon filter is ducted to a fan above the ceiling (sucking hot humid smelly air out of the room). The ducting on the left is connected to a fan above the ceiling blowing cold air through the cooltubes (as pictured below).
The ducting then continues to outside the room. This is the most efficient way of air cooling a bulb because ur cooling it with cold air as opposed to trying to cool it with hot air.
Hope this helps mate
Like this
The carbon filter is ducted to a fan above the ceiling (sucking hot humid smelly air out of the room). The ducting on the left is connected to a fan above the ceiling blowing cold air through the cooltubes (as pictured below).
The ducting then continues to outside the room. This is the most efficient way of air cooling a bulb because ur cooling it with cold air as opposed to trying to cool it with hot air.
Hope this helps mate
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Blue brother
Well-Known Member
It seems like a headache now but once you master ventilation then it's transferable to any size grow room. Plus ur ladies will thank you for all those extra lumens by producing harder than ur dick buds.
Thanks for the reply..
My intake is under the door..would u suggest using 2 6" fans ? I'd rather not suck all the hydro but if I have to I would..
I want to convert my old school light to a hood as well idk if its possible its enclosed atm...
Looking at the outside of the door should I make a 6" hole through the concrete and drywall on the other side to cool the light ? And then run my exhaust how I am ?
Would my intake on the door be passive still? I actually have a fan mounted on the door could I take it off if I did this ?
Just not sure what to do..one fan Or two fans..drilling 6"/ hole in wall.. Idk what should I do lol..
If I did two fans ..could I seal off the hole in the door..even though the air is only going to the hoods..or should I still have a passive going to the room aswell
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Blue brother
Well-Known Member
You still need a passive intake to ensure that co2 and oxygen are replenished. This intake should be about 2x the area of your exhaust. Example: 8inch exhaust diameter - 16 inch intake diameter.
If you have an active intake then it should be roughly half the diameter of the exhaust. This factors in the loss of airflow due to the filter and still ensures your room will run at negative pressure.
Example: 8inch exhaust diameter - 4 inch intake diameter.
You can pick cooltubes up quite cheap at the moment, you want a 6" cooltube for a 1000w bulb.
I don't know what ur light is so it would be impossible for me to say if u could modify it. You could put another hole in the door and run ur ducting from that to the fan then through ur hood then duct out into the same space your exhaust goes. But you will need to make another hole.
If you have an active intake then it should be roughly half the diameter of the exhaust. This factors in the loss of airflow due to the filter and still ensures your room will run at negative pressure.
Example: 8inch exhaust diameter - 4 inch intake diameter.
You can pick cooltubes up quite cheap at the moment, you want a 6" cooltube for a 1000w bulb.
I don't know what ur light is so it would be impossible for me to say if u could modify it. You could put another hole in the door and run ur ducting from that to the fan then through ur hood then duct out into the same space your exhaust goes. But you will need to make another hole.
This is the inside of the door..I think it would be difficult to run 6" ducting through the door and to the lights.. I also won't be able to vent it from the lights outside beside it will smell won't it?.. Or just cool air through the hood and out stay sealed and smell free ?.. If I use two fans.. I'll have to go through the concrete and make a 6" hole.
So what your saying is I should:
Get a new 6" 440 cfm - have this one set up how I currently do in the corner suckkng through filter and blowing out.
Use my current canfan 260- without filter mounted on wall in a hole I made going to the hood and then outside beside my other exhaust ? I am not sure if two exhausts will fit the window is prob 10x9high or something so like I said the 6" will kind of have to be bended to sit in there.. Maybe I could squeeze a 4 beside it if I reduced the 6" from the hood..?
And keep a passive hole at door 8x8"? Its about that now
I think I'm gonna get some mesh to disguise the window on the outside..there's a thin layer there now but u can still see through it. Noise is a concern as the one I have now is a slight hum but its ok.
And as.for my light it says Sylvania 1000w on the outside..everything is on the inside of it..here's a pic as well.
Thanks for all the replies and covering every aspect in your post..I hope the next one does too..really appreciated.. I'm gonna order the 6" hurricane at 440 cfm prob
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670420grower
Well-Known Member
got the same setup, but i set my carbon filter on the exterior side of my grow room. I'd agree w/Mr. mustache's feedback -
Not sure to go with 8" or 6..anyone here using an 8" ? With a 7x7x7 Like me.got the same setup, but i set my carbon filter on the exterior side of my grow room. I'd agree w/Mr. mustache's feedback -
So I'll go
filter-ducting to hood -ducting to fan and ducting outside
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