Grow Room Ventilation: How to Pick & Install Basic Extraction Equipment | Step by Step
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- เผยแพร่เมื่อ 14 ธ.ค. 2024
- Our full comprehensive Extraction System guide. Taking you through extraction set up and giving you helpful pointers on how to maintain it once you've set one up.
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I don't have a "grow room" but last year I grew a few plants, very successfully for my own use, in my 10 X10 basement room completely sealed off to everything except the entry door to access the room, no windows no vents, etc, all concrete. I had an LED grow light, a dehumidifier and a box fan with a charcoal filter mated to it for odor control and another box fan for air circulation. The only time I would go in was when I watered. Grow light was remote controlled. It was surprisingly simple although I had some fights with soil gnats and some powdery mildew but the end product was excellent. The only fail was odor control, especially during flowering. I'm trying to decide if a stand alone fan and filter(similar to what people use in a grow tent) would work vs a reasonably sized(???) ozone generator. The ozone generator is tempting. On the other hand, I might be able to create negative pressure with a fan/filter. Any advice would be appreciated.
If its unventilated we'd go with extraction all day. Using ozone on a space that size would be potentially dangerous as you certainly do not want to be breathing that in. So in short, extraction all day long.
@@growell thank you, that's what I'm going to do. Any suggestions on fan/filter combo?
@@flippercosby2930 "AC Infinity" for the fan/filter
I want to use an active intake in my new tent (120/120/200) my extractor ( 150 ) has 10 levels max up to 595m3/h. 600 w Led Light. How powerfull should my active intake be then lowest or maximum !? What are you using for the intake !? I have an HG Power ( 150 mm ) with 3 levels that can go up to 310m3/h, is that enough !? THX in advance
Wow, I have been looking and looking and your vid is one of the first I have come across that explains this so well. Thank you! What would you consider good for venting 2 4x4's and my only concern is odor control since the smells make him nauseous. I am currently using a vivosun 6" fan but my tent is a bubble lol. I know it pulls plenty of air into this from via the tent, from the rest of my house because you can feel the air that rushes in from under the door (2 " crack at bottom for air exchange).
Hey, just incase u dont know if you're tent is a bubble then its too much air intake. Hope this helps
@@shaneloveridge8349 Yes, I know that. My issue was trying to equal it out and still have good ventilation. I am growing outdoors right now so no issues :)
Would a small 600x600mmx1650mm high tent work with a filter and ext fan up top of tent, and re-routed to bottom of tent, with a small exhale bag hanging low. kind of like a closed loop circuit. so there would be no in take of fresh air (other then when I open tent to water). But there is a small oscillating fan running. Temp of tent is controlled via the room temp. Thanks
Yes, because of the size of tent passive intake should be fine. But keep an eye on your light as this will have the greatest effect on temperature in the described setup.
No. absolute not
If I keep my tent in room. And keep extracted air in the room. Whats the point of extractor?
If we are using leds and temps are fine?
The point of the extractor in the tent outside of temperature control, is to keep a flow of air which provides a healthy amount of CO2 for the plants in the tent.
@@growell So it doesn't matter if same air from room circulates?? If I cannot provide intake air from outside, and if I cant have exhaust outside of my house/flat,
If you are extracting from your tent into a room, and then intaking into the tent from that same room, then that’s not ideal. The air will heat up over time, CO2 will deplete and humidity could become an issue. Much better to take your extraction exhaust to a different place if possible.
@@growell I ask coz I saw bunch of videos that people have grow tents or boxes in their kitchen or bedroom/living door..
@@diskokilla3392 yes thats smart because it saves you money in heating and co2, dont let any dumbass trying to sell things tell you otherwise
Nice video. What is proper ventilation for a 5x5 tent grow with a 730W LED in a room with 10,000 BTU window AC? The house has central air. Half the window AC will be routed into the tent for a constant supply of cool air. Should I exhaust the tent out the window, in another part of the house, or in the same room ? 2 in-line fans, one for intake, one for exhaust or just one for exhaust that’ll pull air into the tent too ? Thank you!
With a growing space of that size we'd definitely use an in-take and out-take fan. Ideally have your exhaust out of a window if able. If you can't extract out of a window then have the exhaust go into another room.
GroWell Horticulture lovely!! Thank you for your reply and video ! Subscribed
When should you start using the air system?
From the very beginning, any age plant will benefit from fresh air being brought into the grow space and old air being removed.
can I grow cannibus in my garage where the temp is likely to exceed 100 deg. farenheight.
no, use your bombshelter so mom wont find out
Thank you. Very helpful video. Im now a Subscriber!
Awesome, thank you!
Using a extractor that can pull 700m³/h, can i use only passive intake or should i use passive and active intake. How big does the intake hole have to be for 700m/³ or what is the lowest m³/h i can activly put in so it has good pressure inside the grow.
An extractor fan that strong certainly requires you to have an in-take fan running as well. Passive intake won't be able to keep up when you've got your fan running at higher settings.
For simplicity just match the size of ducting to the spigot on the fan. So if your fan has a 150mm spigot for example you'll want 150mm ducting and therefore an intake hole of at least 150mm, though most grow tents support all ducting sizes.
When it comes to pressure inside the grow room, you just want to have a slight negative pressure our recommendation for in-take in most cases is to opt for the next fan size down. So, if you've got a 150mm fan for extraction we'd recommend a 125mm fan for in-take, as an example.
How well do the carbon filter work to eliminate Oder?
Carbon filters work really well to eliminate odour. It's their main purpose in the extraction process.
hi. i have an oid unused carbon filter. is it usable after about 7 yrs of being in a sometimes damp English garage
Probably not. If it's not been used for a while then dry storage is essential. We'd advise a new one.
At the 1min 45sec you have some sort of filter with a draw string? What exactly is that you're using? I'm not wanting to use pantyhose
That filter is a bug blocker.
If you're based in the UK you can order them from our website: growell.co.uk/pest-control-plant-health/pest-control/horti-shield-bug-blockers.html
To anyone starting out, we all know funds can be tight BUT........... never ever try save money on your extraction!. Cheaper filters in my opinion are not very good at all, always try save money elsewhere to go for a better brand extraction filter.
At the end of the day it’s for YOUR safety and you risk everything by trying to save afew quid.
BTW the carbo air filters in this vid are 👌👌, these will last you a sold 2/3 years
I did this mistake by ordering a grow kit. Only the light and the tent was somewhat worth the price, everything else was basic and cheap. The fan was extremely loud and barely powerful. The carbon filter is cheap as well, and probably exhausts carbon dust particles which is not safe for breathing. Now i have to buy another fan and a filter and spend more money.
Iv always got the best filters but it’s hard to say they last 2-3 years , that depends on a few things , such as I run mine 24/7 some people turn them off at night which would straight up give them twice the life as mine, also humidity will effect them so if you live in a high humidity environment it will shorten the life, also filtering the incoming air , I have dust filters on my air intake those filters need cleaning every month as they get caked with dust from the air without it all that dust would be clogging up the filter even with the filter protector some still gets through.
@@JohnAlexanderramboparyjrthe3rd I always run filters 24/7, where I’m at humidity is normally low I use humidifiers to take you to around 65% max. Once you go over 75/80% filters don’t work. I always go for a thick carbon bed and honest get around 2-3 years max out of mine but I do buy new dust coats ever 6 months. I last few filters Iv changed where for purely age related reasons not failure……. It’s not something you want to be doing mid way through a tomato cycle
I am a firm believer in push-and-pull. meaning, add an intake fan the same size as the outtake fan and adjust with speed controllers to get your balance.
thank you, very helpful!
You're welcome!
I was wondering how could this set up be as it looks like a closed system with no relation to the room itsel. It looks like it sucks the air from outside and move through itself and then back out.
I would think. there should be two separate set up. One blowing air into the room. And another completely different set up at the other side of the room blowing air out.
What I like to see exactly the part that the air actually enters the room, not the part that is outside the room, that is obvious.
Then I like to see the part that the air from the room enters and is pushed out, not the part that is outside the room.
You can't have the blowing in and blowing out next to each other.. I don't get it.
What you'd like to see is a space comprising of both an air in-take and out-take. In grow tents over a certain size we certainly recommend using an air in-take, but with a tent of the size we're using in the video, passive in-take will suffice. Plus we're definitely keeping our focus on extraction in this video.
That being said the layout you talk about, with the extraction and in-take systems at opposite ends of the growing space (if you're using both) is the correct idea.
I pulled out my charcoal canister with seven large plants in a 4 by 8 and had zero smell from it the only smell I'm getting is now that I've harvested a week and a half later now they're smelling but nothing came out of the tent as far as funky smell goes. Save myself $180 on a new filter
ditchweed doesnt smell
@@bishplis7226 mine usually smells when it's drying. But when it's growing it's not really a snow and it's far from ditch weed 🤣🤣🤣 707 cookies, gorilla glue, OG 13, lemon OG Kush, Peach Trree, White widow, Cheese plant, hash lover. Charcoal canisters are a complete waste inside your tent you don't need it. Now drying you could have one in there and it still has a hard time what do you do when your manicuring it stinks like hell then as well. Probably the worst when your manicuring. And you never can be a hand trim.
Hay buddy when yiu says charcoal filters completely wate 9f time.
Is that in the tent u mean as I've got a 1plant set up small 600 LED Dimable like so way down at 20% sp maby 200w light output MAX
Bso 9m very tight for space and need/want something outside tent can I just reverse my fan on the my filter.
Sp it's not pulling iar through the filter then out the back/waste pipe
But for it to pull through ducting then out the filter. Without the spck thing on the outer ?? Any help is greatly appreciated
Can someone answer me this . Is it better to have 2 exhaust fans or 1 with the equivalent cfm3? I’m considering buying either 2 at 1400cfm each or 1 at 2800cfm , I wanted just the one but realised it would be much heavier to install but then I started wondering if I had 2 they Would possibly fight against each other?
There are pro's and con's to both. We'd say that it is mostly dependant on the size of the growing space.
The pro's of 2 extraction fans (placed at opposite ends of the growing space) is that the air will be drawn in different directions which will mix the air effectively. Evenly spreading out temperature and humidity etc.
The con though of having 2 extraction fans is that if you are operating them from a temperature controller there will be greater swing in fans being on and off, as both fans will work in unison to moderate the temperature change in the growing space.
In terms of actual air being extracted having 1 or 2 fans won't matter as the same amount of air will be extracted, given the example you're using.
A single fan is suitable for anywhere up to roughly a 4m x 5m space, we would begin to use multiple fans after that point.
@@growell greatly appreciate the response , that’s given me more to think about , I have a 3mx4m space, it’s probably best if I go 2 fans, 1 at each end . Thanks 🙏
Is there a way to have the filter and fan outside of the tent, pulling air out as opposed to sucking air into the filter? In order to free up room inside the tent... If so, please do a video demonstrating this🙏
It is possible using the fans and filters we show in this video to have just the filter inside the tent, then run the ducting outside of the tent to the extraction fan. If you want both the fan and filter to be outside of the tent, then you'll need to buy an 'Inline filter'.
This is a filter in a special housing that ensures it only filters the air inside the tent, whilst being positioned outside the tent.
Here is one as an example: www.growell.co.uk/fans-filters-environment/carbon-filters/carboair-inline-carbon-filters.html
We don't have a video on this kind of extraction yet but it's a good idea, so something we'll work on doing in the future.
You do not need a fan that strong for a room that small. Do the math, your fan should move SLIGHTLY more than your rooms total square footage.
I don't think you know what you're talking about.pump the CO2 out. what are you talking people pump CO2 in...next
The aim with extraction from tents is to create good airflow and help control your temperature, plus remove old CO2 depleted air from the grow space. With a filter they can also remove unpleasant smells from the grow space at the same time.
Using an in-take fan helps bring CO2 into the grow space, and you can use canister gas or a mushroom bag to add additional CO2.
So you're not trying to pump out CO2. That's another reason to have the extraction at the top of the tent, CO2 is a heavier gas and will generally concentrate lower down in the tent, having the extraction high up reduces the amount of CO2 removed before your plants can use it.
@@growell depleted co2? mofo go refil your blinker fluid while youre at it
Lost me at the metric system