I would leave the intake fans up to the big OPs. I would figure out how it all works first with passives, before getting into creating pressure that needs to be exchanged faster than it comes in. if you push air in and it cannot escape fast enough smell could be pushed out of the room threw the tiniest cracks unless your absolutely positive its sealed. just my $.02
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I would leave the intake fans up to the big OPs. I would figure out how it all works first with passives, before getting into creating pressure that needs to be exchanged faster than it comes in. if you push air in and it cannot escape fast enough smell could be pushed out of the room threw the tiniest cracks unless your absolutely positive its sealed. just my $.02
RomulusUSA
Member
Q, what is a good option for a light-proof vent for my veg to flower room? I intake fresh air via my veg room, and then need it to go into the flower, and then out the carbon filter. In summer, same thing, except it will be AC air, and will be ducted out of the converted window banger into both chambers, and back into the AC by means of the ceiling of the flower room.
Currently I have just been doing tents, and I used a 6" exhaust fan/filter, and dual 6" intakes. Simply using flex duct coming into the tent, going 90* down, 90* toward the back of the tent, and then a 180* in the middle, under my flood tray (which is mounted about 8" off the floor on cinderblocks). I am considered just using a couple pieces of flex tube with multiple 180's and ducttape as it is simple, but it looks bad and I am sure there are better light proof options!
Thanks!
Currently I have just been doing tents, and I used a 6" exhaust fan/filter, and dual 6" intakes. Simply using flex duct coming into the tent, going 90* down, 90* toward the back of the tent, and then a 180* in the middle, under my flood tray (which is mounted about 8" off the floor on cinderblocks). I am considered just using a couple pieces of flex tube with multiple 180's and ducttape as it is simple, but it looks bad and I am sure there are better light proof options!
Thanks!
sup guys...not sure if this is the right thread to put this in for sure but it is on the subject of ventalation...i recently found some clear duct at the grow store.i havnt seen any one else rockin it on the boards,im sure im not the only person that has seen them but i wanted to share my find...
hope this is the right spot,if not mods,feel free to move it to where it belongs.
pic came out pretty bad,doesnt do justice but it was hard shooting directly at the lights and still gettin a quality shot...but u get the idea...
peace-T-
hope this is the right spot,if not mods,feel free to move it to where it belongs.
pic came out pretty bad,doesnt do justice but it was hard shooting directly at the lights and still gettin a quality shot...but u get the idea...
peace-T-
thelaughingman
Active member
my gr requires 2 fans and both are plugged into speed controllers
keep those 2 cents coming im trying to make a buck here
would the C.A.P Air1 be a good choice?
Not too common cause of the light leakage problem. Suprised a grow shop would carry. I have a bunch of insulated duct I use and the inside part, which is what you have, is also clear. I use it if light isn't an issue. Careful as it is potentially more of a fire hazard than foil, but nothing like the white vinyl that would ignite much easier.
medi...yea i didnt put it on anything coming into the room because i didnt want any light leaks.i only used it from light to light.thanks for the heads up on the fire hazard side,ill keep an eye out for any melting or anything like that.
peace-T-
peace-T-
T
TribalSeeds
I would think the NPS hanging above those buds would be a bigger concern than the duct being more flamable than the foil ducts.
I'm confused, a lot of people are telling me it is better to suck your air in through the filter but all of the examples shown are with the air pushing out through the filter.
If I put a filter on one side of my air cooled hood and a fan on the other side will it be enough to vent and cool a 1kw hps with 440 cfm? Can I use one fan this way?
If I put a filter on one side of my air cooled hood and a fan on the other side will it be enough to vent and cool a 1kw hps with 440 cfm? Can I use one fan this way?
TURBD
Member
I was scratching my head about the same thing. When you buy a filter you get a prefilter that goes on the outside. If pushing air through the filter would you not want your prefilter on the inside?
Well I found an explanation for the filter after the fan.
but I still don't understand. why put the filter after the fan.
Genuine Phat Filters offer you the quality you can trust through non-pelletized carbon, using no glues or binders thereby increasing the effective filtering capability of Genuine Phat Filters. Featuring RC 412 CharcoalIncludes PrefilterGiven CFM rating is for scrubbing. Divide by 2 to get exhaust filter CFMCharacteristics of Phat Filters:* Highly effective, Low de
but I still don't understand. why put the filter after the fan.
Genuine Phat Filters offer you the quality you can trust through non-pelletized carbon, using no glues or binders thereby increasing the effective filtering capability of Genuine Phat Filters. Featuring RC 412 CharcoalIncludes PrefilterGiven CFM rating is for scrubbing. Divide by 2 to get exhaust filter CFMCharacteristics of Phat Filters:* Highly effective, Low de
D
DHF
Always used vortex inline fans with carbonaire scrubbers due to the lifetime warranty on the fans , and the perfectly matched cfm`s for the scrubbers......and....Well I found an explanation for the filter after the fan.
but I still don't understand. why put the filter after the fan.
Genuine Phat Filters offer you the quality you can trust through non-pelletized carbon, using no glues or binders thereby increasing the effective filtering capability of Genuine Phat Filters. Featuring RC 412 CharcoalIncludes PrefilterGiven CFM rating is for scrubbing. Divide by 2 to get exhaust filter CFMCharacteristics of Phat Filters:* Highly effective, Low de
When you pull air through a scrubber via the pre-filter , all smell gets sucked outta the room accordingly , but if yas push air through a scrubber then smell gets pushed back into the room through the pre-filter , even though it`s getting pushed out air takes the path of least resistance under pressure........that said.....
Filter then fan suckin shit out the room through said scrubber ftw........
Peace...DHF.....
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Love a well blown garden, it's a rush just standing in there! Music gotta be cranked to drown out 12inchers...peace!
Hikertrash
New member
How do you keep that kind of thing quiet? I've got one S&P TD-200S running, and I can already hear it, although barely, outside my basement door.
Hikertrash
New member
It won't let me edit my previous post, sorry.
I have another question. Now that I've opened up my intake a LOT, how do I make it light tight? Right now, it's just some square holes cut into the plywood wall. I have the room and skills to build some sort of baffle if needed. I had one built into the wall, but it was much much much too small. Now that I've opened it up, everything is much better. My concern is during the 'night', when the exhaust fan only runs a couple times. First, the warm air in the room dissipates very quickly once that fan shuts off. Can I put in some sort of backflow preventor or louver (like on my dryer vent outside? Maybe I can just make some flaps out of plastic? That would help keep light out and warm air in at night, but it won't help with light escaping. I can probably live with the light leaking out, but I have to make sure no light gets in before I flip.
Thanks in advance for any advice.
I have another question. Now that I've opened up my intake a LOT, how do I make it light tight? Right now, it's just some square holes cut into the plywood wall. I have the room and skills to build some sort of baffle if needed. I had one built into the wall, but it was much much much too small. Now that I've opened it up, everything is much better. My concern is during the 'night', when the exhaust fan only runs a couple times. First, the warm air in the room dissipates very quickly once that fan shuts off. Can I put in some sort of backflow preventor or louver (like on my dryer vent outside? Maybe I can just make some flaps out of plastic? That would help keep light out and warm air in at night, but it won't help with light escaping. I can probably live with the light leaking out, but I have to make sure no light gets in before I flip.
Thanks in advance for any advice.
Hey guys, im making a cab atm and need some help finding the right fan 
. the cab dimensions are 16"L x 16"w 26" high, i have got a small carbon filter (bought not home made) so i think pc fans are out of the question because they wont be able to move enough air. my real problem is the missus! see the cab is going to be either in the bedroom or very close to the bedroom (and the walls are very thin) so noise is a big problem. i have been thinking about getting a dayton blower, i know it will do the job fine but it has to be able to push the air through the filter and be quiet enough not to wake the missus / annoy her. this will be my first indoor project in a long time and i really want to get this part right first time. 
. the cab dimensions are 16"L x 16"w 26" high, i have got a small carbon filter (bought not home made) so i think pc fans are out of the question because they wont be able to move enough air. my real problem is the missus! see the cab is going to be either in the bedroom or very close to the bedroom (and the walls are very thin) so noise is a big problem. i have been thinking about getting a dayton blower, i know it will do the job fine but it has to be able to push the air through the filter and be quiet enough not to wake the missus / annoy her. this will be my first indoor project in a long time and i really want to get this part right first time. Buy a duct muffler, or make one using acoustical foam. plus a fan speed control can help in conjunction can drop the noise lvl by at least 25dbls which is a lot there will still be a slight noise but only if you are right on top of it. I run them in everything I do as stealth is usually the #1 factor in building micros. hope this helps you.
I have a question:
I have a secret jardin dr90 twin, I have this for ventilation: http://www.head-nature.com/tree/654/Exhaust-Fan-Sets/article/04246/Exhaust-Fan-Kit-355-m³-h-125mm
Now I need to put another scrubber up in the top chamber (veg). I have only been running the exhaust very dimmed down to keep temps down, without the 400m3 scrubber connected. I was thinking about getting a Y-connection and connect the 400m3 scrubber and the new one I'm about to get for the veg chamber.
The one I'm thinking about is a 300m3 one. Does size matter when scrubber can handle bigger volume than the fan? I'd like to not purchase another exhaust due to lack of funds at the moment. Also I'm a bit worried about the noise from two exhausts...
I have a secret jardin dr90 twin, I have this for ventilation: http://www.head-nature.com/tree/654/Exhaust-Fan-Sets/article/04246/Exhaust-Fan-Kit-355-m³-h-125mm
Now I need to put another scrubber up in the top chamber (veg). I have only been running the exhaust very dimmed down to keep temps down, without the 400m3 scrubber connected. I was thinking about getting a Y-connection and connect the 400m3 scrubber and the new one I'm about to get for the veg chamber.
The one I'm thinking about is a 300m3 one. Does size matter when scrubber can handle bigger volume than the fan? I'd like to not purchase another exhaust due to lack of funds at the moment. Also I'm a bit worried about the noise from two exhausts...
