Question on filter and odor control

justin457 said:

sorry moebius I have to disagree on this diagram - I see people doing this a lot, putting their intake at the bottom of the grow. ideally your intake is cold air and should be coming in at the top, cold air molecules are smaller more densely arranged than warm air molecules, so the cold air falls down. to make sure this happens i also have oscillating fans high up pointed downwards. i've had my intake at the bottom before, moving it to the top cut down a few more degrees.

and as far as putting the carbon filter above the plants to reduce smell the most - that's a myth. put it anywhere in the grow, so long as the room isn't like 4 times bigger than the plant bed. I still have mine high up, because it helps draw out the hottest air in the room, and also get it out of the way, if you have a bunch of fans that are also pushing the air in your room downwards and you're getting plenty of circulation then you don't have to worry about having the intake and the outtake both being in the ceiling, but in a small space like your tent you might want to put the filter on the ground, if there's room. i've never messed with tents so i don't know if you can manipulate where the intake / outtake is or if it comes predetermined.

Click to expand...

The CF is at the highest point possible because thats where the warmest air is. ...... What us growers are trying to do is remove that warm moist air; in the process we passively suck cool air in (rich in CO2).

With the intake at the bottom a cycle of convection takes place. Exactly as it does in nature.

dannyboy602 said:

ive grown decent buds in led's that cant be discerned from hid's. because i bought top of the line led's. so i know from personal experience that anyone who boohoos on led's prolly hasn't grown in them. as far as the odor control you can spend a million bux on vents and fans but the human olfactory sense can detect even a few ppm in a room. and when your plants are near harvest...i dont care how much you spend on fans and vents...you're gonna smell it almost anywhere in your house

Click to expand...

Nobody is boohooing LED. Its just that HID produces better buds in general. Although really terrible bud can be grown with any light.

Your assertion about fans and filters is certainly not my experience. I vent my filtered air through a hole in the chimney stack. Ive had all sorts of official people in my home, nobody can smell anything.... A lawyer lives upstairs from me and has all sorts of her legal friends around, no problem

Its takes thought and a bit of work and constant vigilance for the first few weeks but once dialled in, cannabis odour can be eliminated 100%

Moebius said:

Nobody is boohooing LED. Its just that HID produces better buds.

Your assertion about fans and filters is certainly not my experience. I vent my filtered air through a hole in the chimney stack. Ive had all sorts of official people in my home, nobody can smell anything.... A lawyer lives upstairs from me and has all sorts of her legal friends around, no problem Its takes thought and a bit of work and constant vigilance for the first few weeks but once dialled in, cannabis odour can be eliminated 100%

Click to expand...

Chimneys and sewer vents. You can cut a crude hole in a sewer vent (there is no water or shouldn't be) and feed your exhaust air into it. requires a venturi but you can make it by petaling the end of your vent hose. The venturi speeds the exhaust up. Vents are nearly always big black plastic PVC. No need to seal for water-tightness. ID is easy on the roof as it will be the tallest pipe up there. Water heater chimney vents work great too but be cautious due to CO and those do need to be sealed, preferably with RTV sealant.

Pancho Villa ^

Well I very well might stick with soil on first indoor grow, and I will not be cutting any clones on first grow as I want to just concentrate on basics first. But,
I am intrigued by the GH 8 pot Waterfarm and the Aeroponic 8. From anyone's experience here, would the GH waterfarm fit in a Jardin DR120?

If I am growing indoors, why would I need to deal with pesticides and fungicides? Would this relate more to a soil grow as opposed to hydroponics?

I do understand the diagram on how to ventilate a grow space, makes sense on basic physics. To conserve space for whatever reason, I imagine you
could also run ducting outside of tent and have fan suck out hot air and scrub odor with filter. Correct me if wrong.

Getting very close to pulling the trigger on purchases at this point. As far as nutrients I'm thinking FF, Advanced, Canna, or Botanicare. Seems like all these
are used by many with great veg states and yield.

The temps in my house in hot Arizona summers stay typically around 81-82 degrees, should I worry about running HID even with adequate piping and fans?

I am also now looking at seed banks and I'm mesmerized by all the pics of cool buds lol, Buydutchseeds, nirvana and attitude stick out to me. Feminized
all the way for me, but I don't understand autoflower, why do you need that when you go to 12/12 anyway?

Moebius said:

The CF is at the highest point possible because thats where the warmest air is. ...... What us growers are trying to do is remove that warm moist air; in the process we passively suck cool air in (rich in CO2).

With the intake at the bottom a cycle of convection takes place. Exactly as it does in nature.

Click to expand...

are you serious? you really think you can replicate what happens in our atmosphere in a tent where the air is probably changing once every few minutes? or let alone a large room? well then sorry dude but you're out of your mind (and yes i've done greenhouse grows and terrarium grows with other plant species, i understand transpiration in a closed ecosystem but that is NOT what we're talking about). what us "growers" also use is called co2 injection and co2 burners, like myself, i don't give a flying f*ck about how much co2 is on my intake, i only care about cooling my room and using a separate cooled intake for the lights, because when you have 20 or 30 lights, or even 4, you don't care about creating a convection cycle in your grow room. you care about creating heavy ass dank buds, and not having it smell so you get busted - that said you put the carbon filter (or multiple filters) wherever you dam please, you study biochemistry and plant genetics so you know how to properly feed them to the utmost level while remaining safe in growth and in final product that goes into your customers lungs, and you keep it in the appropriate temperature and humidity range - ever installed a 4 Ton water run air conditioner, or a lister cold start generator? do you know how nucleic acids aid in mRNA transcription and florigen production, or even what that's referring to? i wouldn't have responded so curtly if it weren't for your immature "us growers" comment. you want to remove your warm moist air? invest in a dehumidifier with an outtake.