would exhaust fan be enough air movement

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biggerbud420

biggerbud420

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when i harvest i am gonna dry in the tent this time would my exhaust fan with passive air intake be too much air for the drying process ? i have a 4 inch exhaust fan moves 210 cfm and 2 4 inch intake lines running into tent but my tent still gets sucked in even on low
 
BigCube

BigCube

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when i harvest i am gonna dry in the tent this time would my exhaust fan with passive air intake be too much air for the drying process ? i have a 4 inch exhaust fan moves 210 cfm and 2 4 inch intake lines running into tent but my tent still gets sucked in even on low

I use a humidistat to control the exhaust fan in my tent when drying. They work well.



They have bluetooth versions too if you want to get real hands on with it.
 
biggerbud420

biggerbud420

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I use a humidistat to control the exhaust fan in my tent when drying. They work well.



They have bluetooth versions too if you want to get real hands on with it.
i was asking for airflow more then humidity control although i know humidity is important
 
BigCube

BigCube

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i was asking for airflow more then humidity control although i know humidity is important

Airflow only matters if the air that is circulating is lower in RH than what you are trying to dry.

Airflow only moves air. Dry air flows around what you want to dry, pulling humidity out of it and into itself. Then the air flows away, so new dryer air can come in and the cycle continues.

It's not really about air flow, it's about controlling the humidity of the air that is required to dry your product.

If the air you are moving has a higher RH than you want your product to have, it doesnt matter how much air is flowing. Conversely, if the air you are moving has a lower rh than your end product, it will pull the moisture out. The lower your RH, the more it matters how much airflow you have. Higher airflow equals higher moisture exchange. Leaving your flowers lacking flavor and having a hay like taste.

Controlling the environments RH directly removes all of that nonsense.
Once the RH I the tent gets to a level you set, the humidistat turns the exhaust fan on, lowering the RH in the tent till it gets to a level you set and it turns off. Ensuring the RH in the tent is never too high or too low. From there a small usb fan or literally anything that keeps the air in the tent moving.
 
Lynch_Ironside

Lynch_Ironside

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when i harvest i am gonna dry in the tent this time would my exhaust fan with passive air intake be too much air for the drying process ? i have a 4 inch exhaust fan moves 210 cfm and 2 4 inch intake lines running into tent but my tent still gets sucked in even on low
Humidity and temp play a big role in drying and curing. The more air you exchange the more you will have to add humidity back into the tent. I'm by no means an expert in anything related to growing, I still have training wheels on, haven't put on my big boy pants or crawled out of the child's seat. That being said I'm just gonna tell you what I noticed while in the drying stage.
When I had my 4" fan running on the lowest setting for 15 min I found it was dropping the humidity way too quick. I found that the humidity kept very stable when I eliminated the fan and just have a blowing air indirectly inside the tent. I vent it once a day. Next harvest I will have a humidistat. So they have been hanging in the tent for 8 days, roughly 58 to 60 humidity and temp 66 to 68 f
 
biggerbud420

biggerbud420

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so maybe just keep a fan in the floor of tent on low and do not exhaust anythign ?
 
Lynch_Ironside

Lynch_Ironside

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so maybe just keep a fan in the floor of tent on low and do not exhaust anythign ?
That's what I did. I do vent it once a day while checking on them but that's it. Again not sure if it's the best way just sharing what I've done.
With that said they are starting to smell very nice, no signs of mold or anything.
What's the room rh?
 
biggerbud420

biggerbud420

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That's what I did. I do vent it once a day while checking on them but that's it. Again not sure if it's the best way just sharing what I've done.
With that said they are starting to smell very nice, no signs of mold or anything.
What's the room rh?
i havent harvested yet but my room rh is low i got a humidifier but for now i am using electric heaters to heat with i will put my humidifer in the tent at like 50 rh
 
Lynch_Ironside

Lynch_Ironside

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i havent harvested yet but my room rh is low i got a humidifier but for now i am using electric heaters to heat with i will put my humidifer in the tent at like 50 rh
Might be a bit high. What is your temp? Do you have a temp gun at all? They are super cheap and can come in handy. During flower you want a lower rh especially towards the end to help with trichome production And to make sure that your flowers are transpiring enough not to allow mold to grow. If you have a temp gun I'll post some links that can help you figure out where you need to be at in terms of humidity
 
Lynch_Ironside

Lynch_Ironside

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The man who wrote this is extremely knowledgeable and has taught me a ton. His words strike me as Devine revelation and should be consider as scripture.
Seriously give it a read, and search his other articles as they will vastly improve your growing experience, pleasure in the hobby and if all goes well increase your final yields.
 
One drop

One drop

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I use a 9” fan at bottom of tent tilted up so there is a small amount of air circulating through your tent . Od .
 
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