Grow tent related questions? Plus rep!

irish519

Well-Known Member
Does using a grow tent with a carbon filter/extraction fan kit really work and leave you with no smell atall when the tent is zipped up?

How bad does the smell get with mature plants when the tent is open and you are taking them out for watering?

Does anyone have a suggestion to supress to smell as much as possible when you have to take them out of the tent to water them?

Any good information appreciated guys! Peace....:leaf:
 

alotaball

Well-Known Member
odor wont be an issue if you keep the tent under negative pressure so air that comes in only exits through the filter. They can get really stinky .. but just keep them in the tent when you water?
 

irish519

Well-Known Member
odor wont be an issue if you keep the tent under negative pressure so air that comes in only exits through the filter. They can get really stinky .. but just keep them in the tent when you water?
Sorry man, blame that kickass skunk ive been smoking but could you break that down for me? I can't really understand that negative pressure part!
 

TruenoAE86coupe

Moderator
Negative pressure will make sure you don't lose any smell. To do this you must make sure that your exhaust fan is pulling more air out than your intake fan is pushing in. I don't even use an intake fan, makes that part easier. With no intake it is recommended your passive intake is 2x the size of your exhaust, i use 3x as much just for good measure. Do not allow the fan/filter to turn off even at night and you will be sure to keep smells in control.
As far as moving the plants out to water, can you just move them around inside the tent?
 

alotaball

Well-Known Member
U want the tent to be under vacuum so odor cant escape anywhere but through your filter.. Basically you want to see the sides of the tent slightly sucked in .. this will happen on its own if you use just one exhaust fan and allow the intake to happen passively ( no intake fan) ..

if you do use a intake fan .. make sure that it is pumping in slightly less air than what is being pulled out .. so odor cant escape through zippers ect.

Whats your planned setup?
 

irish519

Well-Known Member
U want the tent to be under vacuum so odor cant escape anywhere but through your filter.. Basically you want to see the sides of the tent slightly sucked in .. this will happen on its own if you use just one exhaust fan and allow the intake to happen passively ( no intake fan) ..

if you do use a intake fan .. make sure that it is pumping in slightly less air than what is being pulled out .. so odor cant escape through zippers ect.

Whats your planned setup?

Thanks for the quick replies, i get what your saying now.
I am planning on growing in a 80x80x160 grow tent using a 400hps light/reflector, a 4'' extractor fan/carbon filter kit.

I have 3 afghan kush and 1 big bud struggling to grow under a 125w cfl at the minute, they will be added to the tent along with 3 royal queen special queen 1# feminized seeds, 2 regular big bud seeds and one carmelo cup winner female seed.

So in total i will be hoping to grow 10 plants in this tent, not forgetting that the 3 regular big bud seeds i got as freebies wont all turn out female. Does it sound good?
 

irish519

Well-Known Member
Negative pressure will make sure you don't lose any smell. To do this you must make sure that your exhaust fan is pulling more air out than your intake fan is pushing in. I don't even use an intake fan, makes that part easier. With no intake it is recommended your passive intake is 2x the size of your exhaust, i use 3x as much just for good measure. Do not allow the fan/filter to turn off even at night and you will be sure to keep smells in control.
As far as moving the plants out to water, can you just move them around inside the tent?
I wont be using an intake fan as funds are a bit tight at the minute..... My tent is only 80x80x160 and will be holding -10 plants (only 7 are feminized) so watering in the tent doesnt sound possible im afraid.
 

alotaball

Well-Known Member
if you vent your tent either into a attic or out a window ect.. it wont matter if you pull the plants out for a few minutes to water... the room the tent will be in should have negative pressure as well.. So if you crack a window somewhere else in the house/apt the air in the room will be pulled into the tent and filtered before leaving the room. You normally want the exhaust from the tent going into a completely different room then the tent is in .... or vented outside. If you keep recycling air in that room .. the temps will rise.

Long story short. If you have your exhaust fan on all the time .. venting outdoors in someway .. odor should never escape the room your growing in ...

I run 2000 watts of flower and 3 veg areas.. and with the door closed and locked.. we have had xmas parties .. babyshowers .. bbq's and no one has ever even noticed a thing. When you buy your filter.. make sure you buy a quality one.. thats one place you dont want to try and save money!
 

resinousflowers

Well-Known Member
Thanks for the quick replies, i get what your saying now.
I am planning on growing in a 80x80x160 grow tent using a 400hps light/reflector, a 4'' extractor fan/carbon filter kit.

I have 3 afghan kush and 1 big bud struggling to grow under a 125w cfl at the minute, they will be added to the tent along with 3 royal queen special queen 1# feminized seeds, 2 regular big bud seeds and one carmelo cup winner female seed.

So in total i will be hoping to grow 10 plants in this tent, not forgetting that the 3 regular big bud seeds i got as freebies wont all turn out female. Does it sound good?
10 plants will be to much for that size tent especially if you plan on vegging them for atleast 4 weeks.what size pots are you planning on using?
 

irish519

Well-Known Member
if you vent your tent either into a attic or out a window ect.. it wont matter if you pull the plants out for a few minutes to water... the room the tent will be in should have negative pressure as well.. So if you crack a window somewhere else in the house/apt the air in the room will be pulled into the tent and filtered before leaving the room. You normally want the exhaust from the tent going into a completely different room then the tent is in .... or vented outside. If you keep recycling air in that room .. the temps will rise.

Long story short. If you have your exhaust fan on all the time .. venting outdoors in someway .. odor should never escape the room your growing in ...

I run 2000 watts of flower and 3 veg areas.. and with the door closed and locked.. we have had xmas parties .. babyshowers .. bbq's and no one has ever even noticed a thing. When you buy your filter.. make sure you buy a quality one.. thats one place you dont want to try and save money!
Thank's man appreaciate all the info! It's very reassuring to know all that........ Woah now that's some quality odour controll you have going on!
 

irish519

Well-Known Member
Also i will only be vegging the 7 non auto-s for 2 weeks, and only 4 of these 7 are feminzed seeds.........
 

alotaball

Well-Known Member
in soil I wouldnt grow more then 3-6 under a 400 watter.. unless you wanted to do a sog ( sea of green) with a bunch of unvegged clones. If it gets too crowded you will be inviting mildew and bud rot.. plus lots of the buds will get no light being smashed up against the other plants. Remember that indica's will nearly double in size from the flip to 12/12 .. sativa's and hybrids can triple in size. Just imagine all the plants you want to put in there at double to triple size.. will they fit?
 

laserbrn

Well-Known Member
Nah, 10 plants is about perfect for that size tent. What isn't going to work is a 400w light. 1000w light and you can have your 10 plants in that size tent.

The answer to your question is to put an ozone generator inside the room that the tent will be in. A small one (1000sq ft model) on a timer set for 15 minutes every hour or so will clean up any left over smells and clear out the smell from you watering. I lived in an apartment and didn't want my roommate to know I was growing at one point. I believe the model I used was made by Uvonair.

Ozone can be dangerous to people in large quantities, but has a very short half life. That's why I use the timer set to 15 minutes every hour and no one lives in that room.

http://www.google.com/products/catalog?hl=en&q=uvonair+1000&gs_upl=374l2886l0l3166l13l6l0l4l4l0l187l888l0.6l10l0&bav=on.2,or.r_gc.r_pw.,cf.osb&biw=1600&bih=719&wrapid=tlif132236879195110&um=1&ie=UTF-8&tbm=shop&cid=5274628203589619087&sa=X&ei=Hr_RTtX4O-iIiALl0My-Cw&ved=0CFoQ8wIwAg#
 

irish519

Well-Known Member
Nah, 10 plants is about perfect for that size tent. What isn't going to work is a 400w light. 1000w light and you can have your 10 plants in that size tent.

The answer to your question is to put an ozone generator inside the room that the tent will be in. A small one (1000sq ft model) on a timer set for 15 minutes every hour or so will clean up any left over smells and clear out the smell from you watering. I lived in an apartment and didn't want my roommate to know I was growing at one point. I believe the model I used was made by Uvonair.

Ozone can be dangerous to people in large quantities, but has a very short half life. That's why I use the timer set to 15 minutes every hour and no one lives in that room.

http://www.google.com/products/catalog?hl=en&q=uvonair+1000&gs_upl=374l2886l0l3166l13l6l0l4l4l0l187l888l0.6l10l0&bav=on.2,or.r_gc.r_pw.,cf.osb&biw=1600&bih=719&wrapid=tlif132236879195110&um=1&ie=UTF-8&tbm=shop&cid=5274628203589619087&sa=X&ei=Hr_RTtX4O-iIiALl0My-Cw&ved=0CFoQ8wIwAg#

I wouldn't use a 1000 watter in any grow. A thermal imaging camera used by those helicopters the garda keep flying around in could easily detect the heat from 1 of those bad boys!

I looked up that ozone generator. Would one of these be too risky to use in a bedroom where someone sleeps?

The 1000sq foot model sounds like it would be deadly in a small room if it wasn't set up correctly. Seems a bit too dangerous to buy if you ask me.
 

irish519

Well-Known Member
in soil I wouldnt grow more then 3-6 under a 400 watter.. unless you wanted to do a sog ( sea of green) with a bunch of unvegged clones. If it gets too crowded you will be inviting mildew and bud rot.. plus lots of the buds will get no light being smashed up against the other plants. Remember that indica's will nearly double in size from the flip to 12/12 .. sativa's and hybrids can triple in size. Just imagine all the plants you want to put in there at double to triple size.. will they fit?
I can see your point but only 7 of the seeds are feminzed and the 3 afghan kush will be done by the end of december. I also lost a seed(stupidly) which means i might be pushing it a bit with 9, but i am hoping only 1 of those 2 regular big bud seeds will turn out female which would leave me with 8 girls. Down to five by the end of december, do you think that sounds ok? I dont want to get a bigger light though, 400w seems enough for this size personal grow.
 

laserbrn

Well-Known Member
I don't know what country you are in or who the garda are, but a helicopter isn't going to see a single 1000w light and figure that someone is growing. Again, a spaceheater would put off more heat than a single 1000w light lamp. Think about what you're worrying about.
 

irish519

Well-Known Member
I don't know what country you are in or who the garda are, but a helicopter isn't going to see a single 1000w light and figure that someone is growing. Again, a spaceheater would put off more heat than a single 1000w light lamp. Think about what you're worrying about.
The garda/police in my town have released a number of videos/ pictures to deter anyone interested in growing weed. These videos show grow house's being raided which arent really grow houses.

They arrested and locked up a single fella for growing a number of plants using a single high powered light(such as hps,metal halide etc) showing how the thermal imager they use is extremely sensitive and can detect temperature variations as small as 0.1 degrees centigrade.
....
 

alotaball

Well-Known Member
I can see your point but only 7 of the seeds are feminzed and the 3 afghan kush will be done by the end of december. I also lost a seed(stupidly) which means i might be pushing it a bit with 9, but i am hoping only 1 of those 2 regular big bud seeds will turn out female which would leave me with 8 girls. Down to five by the end of december, do you think that sounds ok? I dont want to get a bigger light though, 400w seems enough for this size personal grow.
all depends on how big they are when you flip them and how much the genetics " stretch " during flower. I dont like a overcrowded area.. hard to work with .. bud quality goes down.. mold and mildew chances go up . But .. ill tell ya one thing.. your gonna find out if its too much , not enough , or just right lol!. I wouldnt worry about the light ... how would they know the difference between a light and a oven .. or heater in your home. That 400 watter doesnt put out much heat... I would think the thermal image would need to be combined with some other type of evidence before a warrant can be issued. JMO
 
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