Can I get away without a carbon filter or inline fan ?

So. Going to grow sativas in a 4x4.

I've grown sativas mainly jack herer in smaller spaces and there is literally no smell .

And when it comes to air circulation .

.thinking a fan inside the tent and open the tent daily to circulate fresh air ?

Obvious for future grows a carbon filter would probably be nessacary . But the first 3 months in the tent I'll grow jack herer which ove not gad an odur issues with

Best to have an exhaust fan on the tent to bring in new air/co2 and control the humidity.

Marijuana needs lots of fresh air to grow at optimum levels. Don't get me wrong it will grow. Just not to its potential. Without added C02 in your 4x4 the plants will suffer if there is no fresh air. Also stale stagnate air is just asking for disease and pest problems. Move lots of air.

You need a flow of air in and out of the tent. The plants will quickly use up the available CO2 in the immediate area. You also do not want mold spores hanging out in your tent. When you get big ole thick colas without airflow you are asking for bud rot.

You can do it if you have a good ac, clip on fans in your tent, and a strain that grows small/medium type buds...

OP

Yeah. You can get away with it. But that just it. You can get away with it. Your going to want to give fresh air several times daily and make sure you have no areas of stagnant air. But you can grow some pretty decent herb still. Iv done it. But it’s Also why I chose closets over tents if i have no exhaust fans

DrOgkush said:

Yeah. You can get away with it. But that just it. You can get away with it. Your going to want to give fresh air several times daily and make sure you have no areas of stagnant air. But you can grow some pretty decent herb still. Iv done it. But it’s Also why I chose closets over tents if i have no exhaust fans

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I have an idea which myt do in the meantime .

I have x2 bin space bucket I did my first ever grow in . I can take them apart and use one single and put the lid on it .

I have 4 pc fans I could install the PC fans so they are an intake into the bin and feed a duct tube Into the tent .

The fans are pretty much silent but throw an ok amount of air . Then I'll open the tent everyday and obviously there will be a passive exhaust .

Temporary but I'll get a inline and exhaust at a later date when I can better manage the noise
And then I'll use some clip fans inside

Ive got a homemade grow box out of 1/2 styrofoam sheets 2 pc fans blowing in 2 pc fans blowing out. Is it the perfect setup hell no but I put it together with junk around the house and cheap $50 lights. Nice buds growing but not monster. But enough to keep me in smoke through this winter.

Get a cheap exhaust fan and you'll be fine. The filter isn't necessary unless you've got uncool/nosy neighbors but the fan is a must. This is what I use in my 4x4 with a 600w open hid it works, tent temp stays around 80-82° with a room temp of 75°

iPower Silent Inline Duct... https://www.amazon.com/dp/B08TLXHK78?ref=ppx_pop_mob_ap_share

In my experience, very little air exchange is needed to maintain a good co2 level. I used a pc fan in a 5 square foot tent, but will go bigger for more efficient humidity control. I think I'll just get a Cloudline, they a have a nice controller.

Titanium Rex said:

Ive got a homemade grow box out of 1/2 styrofoam sheets 2 pc fans blowing in 2 pc fans blowing out. Is it the perfect setup hell no but I put it together with junk around the house and cheap $50 lights. Nice buds growing but not monster. But enough to keep me in smoke through this winter.

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I still have my first cabinet from a few years ago, a big cardboard box.
All I need is a knife for custom vent and cable ports!

1212ham said:

In my experience, very little air exchange is needed to maintain a good co2 level. I used a pc fan in a 5 square foot tent, but will go bigger for more efficient humidity control. I think I'll just get a Cloudline, they a have a nice controller.

CLOUDLINE PRO T4, Quiet Inline Duct Fan System with Temperature Humidity VPD Controller, 4-Inch

Your source to create smart growing systems with components including advance grow tents, inline fans, clip-on fans, LED grow lights, and UIS™ controllers.

www.acinfinity.com

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I think you may be getting more air exchange than you realize. A 120mm pc fan has ~ 50-100 cfm depending on speed. In a 5ft^2 tent (assuming ~ 6'tall), air would be replaced a few times a minute, which is good air exchange.

The Controller 67 is much more versatile than the bundled controller (maintaining a min speed being the noteworthy feature). Best bet is to buy the basic fan w/ simple 10 speed controller and purchase the controller 67 separately.

Max Ehrmann said:

Marijuana needs lots of fresh air to grow at optimum levels. Don't get me wrong it will grow. Just not to its potential. Without added C02 in your 4x4 the plants will suffer if there is no fresh air. Also stale stagnate air is just asking for disease and pest problems. Move lots of air.

Click to expand...

Spider farmer has a 95 and a 185 cfm in-line that’s around a hundred dollars and it should be fine depending on your light. But if fans are your only option and intakes are out of budget, I would buy a small kitchen exhaust fan for fourty dollars or a 25 dollar exhaust booster fan off Amazon and point it in the exit hole with a 4 or six inch dryer vent to substitute an in-line temporary but you would still have the smell and the fungus gnat issue come your way like he said. I learned the hard way so I bout the 440 Vivosun exhaust for 120. Happy farming

Holeleeshet said:

Spider farmer has a 95 and a 185 cfm in-line that’s around a hundred dollars and it should be fine depending on your light. But if fans are your only option and intakes are out of budget, I would buy a small kitchen exhaust fan for fourty dollars or a 25 dollar exhaust booster fan off Amazon and point it in the exit hole with a 4 or six inch dryer vent to substitute an in-line temporary but you would still have the smell and the fungus gnat issue come your way like he said. I learned the hard way so I bout the 440 Vivosun exhaust for 120. Happy farming

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I learned that it’s not so much of the air that you’re bringing in, but it is the air that you’re pushing out that’s what’s more important. Two small window fans is enough air for co2, it’s humidity and 72+ temps with ph balance that optimizes the ladies when you feed em.

A cheap inline fan is like $40, if you can't afford that then I would be growing outdoors.

Billy the Mountain said:

I think you may be getting more air exchange than you realize. A 120mm pc fan has ~ 50-100 cfm depending on speed. In a 5ft^2 tent (assuming ~ 6'tall), air would be replaced a few times a minute, which is good air exchange.

The Controller 67 is much more versatile than the bundled controller (maintaining a min speed being the noteworthy feature). Best bet is to buy the basic fan w/ simple 10 speed controller and purchase the controller 67 separately.

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Just ordered a 5 x 5 Cloudline and the 6 inch accessories. Now I just got to wait until after the 10th for it to arrive. Looks like the styrofoam grow box will function as a little girls playhouse until she bumps into it lol

Billy the Mountain said:

I think you may be getting more air exchange than you realize. A 120mm pc fan has ~ 50-100 cfm depending on speed. In a 5ft^2 tent (assuming ~ 6'tall), air would be replaced a few times a minute, which is good air exchange.

The Controller 67 is much more versatile than the bundled controller (maintaining a min speed being the noteworthy feature). Best bet is to buy the basic fan w/ simple 10 speed controller and purchase the controller 67 separately.

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Actualy it's a 50 mA cob fan on an Inkbird humidity controller, very little flow. I'll measure it just out of couriosity. The link posted is the T4 with the Controller 67.

1212ham said:

Actualy it's a 50 mA cob fan on an Inkbird humidity controller, a miniscule amount of flow. The link posted is the T4 and Controller 67.

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The bundled controller with the T series fan is not the same as the Controller 67 sold separately.

*At least they weren't 6 months ago. I bought a T series and returned for the dumb version (S series) and the controller 67 after talking with AC Infinity.
The bundled controller lacked the ability to set an "OFF" or minimum speed. That was a deal-breaker for my application.

Billy the Mountain said:

The bundled controller with the T series fan is not the same as the Controller 67 sold separately.

*At least they weren't 6 months ago. I bought a T series and returned for the dumb version (S series) and the controller 67 after talking with AC Infinity.
The bundled controller lacked the ability to set an "OFF" or minimum speed. That was a deal-breaker for my application.

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What's different? Did you click the link?

Yes, that's the T series with bundled controller.
As said, an OFF or minimum speed is not available with the bundled controller is the most notable omission. There's some other timer programming options as well iirc.