Dehumidification in vent tent

Good day guys,

How do you have your grow tent humidity control?
I live in the place its kind of humid all years
my tent humidity lowest 60%, over 70% in raining days
I flip about a month ago. I know i might need to have lower humidity when flowering.
After some researching, ppl recommend have stronger fan to vent the air out of the tent, but how is that possible to drop from 70% to 50%?
I have a dehumidifier, but not sure how it works when I have the air in my tent be keep pulling out.

pls share your experiences if you know how to deal with it.
really appreciate!

if you are pulling air from the room into the tent, run the dehumidifier in the room. most have a digital display and control to set desired humidity.

Yep....welcome to tent growing. They are a pain in thee arse to control temps and humidity. Your vent fan is prolly not gonna drop it to acceptable ranges if the air outside the tent is high in relative humidity. Throw a small dehuey in there if you can fit one. But be forewarned...they put out warm dry air in place of moist air. This could raise the tents temps to ranges out of ideal. Especially at night when duhueys do thier real work. Again welcome to tent grows....where your largely a slave to outside the tent conditions. The reason they sometimes work for some is people (usually without knowing) put them in a room (or even in a general area on the planet) that is pretty ideal to cannabis climate needs to begin with....if not the small tents require appliances to make thier own micro climate happen....taking up valuable real estate that you wish you could put plants there instead. Good luck!!!

You can try the dehuey outside the tent and just run your vent fan to "draw" the dry air through. But its really inefficient. What ive found with tents long ago was that in a basement (where i ususally had them)....i was cooling, warming and dehumidifing the basement outside the tent to control the climate inside the tent. So i just started to leave the doors of the tent unzipped and open. Then i realized....my growroom WAS the basement itself with tent poles and tent canvas in the way....lol. Ah....the good ole tent days....

I know you gotta do what you gotta do....but except for vegging....tents frikin suck balls. Been there .....done that. Sometimes thats all you got. But if you got the room and some basic carpentry skills or even trusted pals that dont mind helping for some buds later down the road....build a real frikin growroom man. And thank yourself later. Trust me. This is coming from a guy that has spent thousands over the last 25 years with headaches to match trying to grow buds the most efficient and best way possible.

It would be ideal to put a dehumidifier in your tent

Word....but what about the heat then? Especially in the warmer months if where hes at has any (probably)?

Iam telling ya man....tents are a snake eating its own tail. Ive had big ones...small ones...tried to control climate in every which frikin way you can possibly imagine. Its not impossible...just for what it takes for 24-7 year round total control...they were not worth it to me in the overall picture.

roseypeach said:

if you are pulling air from the room into the tent, run the dehumidifier in the room. most have a digital display and control to set desired humidity.

Click to expand...

Thanks for your feedback.
I pull fresh air out of the window.
I have a old dehu only have on off and auto.
I dont think dehu can have my tent humidity drop lower then 50%, I still most need digital display and control to set humidity?
I can have it in the tent, do you think that would work better?

since1991 said:

I know you gotta do what you gotta do....but except for vegging....tents frikin suck balls. Been there .....done that. Sometimes thats all you got. But if you got the room and some basic carpentry skills or even trusted pals that dont mind helping for some buds later down the road....build a real frikin growroom man. And thank yourself later. Trust me. This is coming from a guy that has spent thousands over the last 25 years with headaches to match trying to grow buds the most efficient and best way possible.

Click to expand...

Thanks for your feedback!
I wish I can build one too but Im in the rental place, which Im not allowed to do much here. so I think tent would be my only choice.
I live in the area where is hot and humidity except for winter, I will running portable A/C to against the heat, I heard A/C can also dehumidify the room. As A/C will be running 24/7 for most season, I think I would not need dehu except winter

when having dehu in my room, Having intake tube beside duhu have duhu air suck it in? If using this way, do I lower my exhaust? Do I need to have my windows and door closed?
thanks!

Diabolical666 said:

It would be ideal to put a dehumidifier in your tent

Click to expand...

Thanks for your feedback
if i put it in the tent, do I need to lower the exhaust and intake fans?

Dehuey in the room and proper air exchange in the tent will be fine. I would spend the $150-200 on a decent entry level digital unit, it's worth the money.

ligrow said:

Thanks for your feedback.
I pull fresh air out of the window.
I have a old dehu only have on off and auto.
I dont think dehu can have my tent humidity drop lower then 50%, I still most need digital display and control to set humidity?
I can have it in the tent, do you think that would work better?


Thanks for your feedback!
I wish I can build one too but Im in the rental place, which Im not allowed to do much here. so I think tent would be my only choice.
I live in the area where is hot and humidity except for winter, I will running portable A/C to against the heat, I heard A/C can also dehumidify the room. As A/C will be running 24/7 for most season, I think I would not need dehu except winter

when having dehu in my room, Having intake tube beside duhu have duhu air suck it in? If using this way, do I lower my exhaust? Do I need to have my windows and door closed?
thanks!


Thanks for your feedback
if i put it in the tent, do I need to lower the exhaust and intake fans?

Click to expand...

put it in there and see how much water pulls out of the tent

Ac does dehumidify but where you really need dehueys to work is lights off. When plants transpire. Air cooling is really needed lights on....to cool the tent. You will figure it out. Your on the right path. There are many ways to do it. Just be prepared to change up considerably as the seasons and climates change outside. What you got that works now will not work a few months from now as climate changes.

lawlrus said:

Dehuey in the room and proper air exchange in the tent will be fine. I would spend the $150-200 on a decent entry level digital unit, it's worth the money.

Click to expand...

thanks for your feedback
What exactly the unit you mentioned? Im not in US, Its really expensive for me to get anything there. I will see if I can get similar one around.

Diabolical666 said:

put it in there and see how much water pulls out of the tent

Click to expand...

Thanks I will try it to see which way work best for me.

since1991 said:

Ac does dehumidify but where you really need dehueys to work is lights off. When plants transpire. Air cooling is really needed lights on....to cool the tent. You will figure it out. Your on the right path. There are many ways to do it. Just be prepared to change up considerably as the seasons and climates change outside. What you got that works now will not work a few months from now as climate changes.

Click to expand...

I know its gonna change the setup in few month. I wanted to get the environment controller to have more control. After some research, I found it its not worth to buy, if Im not using CO2. anyways, I will try which work best for me.
really appreciate all you guys feedback
cheers

You can get a pretty nice Haier unit in a big box store (Walmart, Home Depot, something like that) in the US for $100-200 depending on size and function. Not sure where to tell you to look or how much it will be if you're not in the US but I can't imagine it would be too difficult to find or much more expensive in any similar type of store. If you're going to be expanding you might consider spending several hundred on an entry to mid-level commercial model but if this is just a one tent hobby grow you can definitely get away with a consumer model. I have a backup Haier that was around $150 which has a digital display and built-in timer along with two always-on settings and one "smart dry" setting that cycles as it's needed instead of running all the time. It's just powerful enough to handle my roughly 12x10 space but any bigger and I would need a commercial unit.

lawlrus said:

You can get a pretty nice Haier unit in a big box store (Walmart, Home Depot, something like that) in the US for $100-200 depending on size and function. Not sure where to tell you to look or how much it will be if you're not in the US but I can't imagine it would be too difficult to find or much more expensive in any similar type of store. If you're going to be expanding you might consider spending several hundred on an entry to mid-level commercial model but if this is just a one tent hobby grow you can definitely get away with a consumer model. I have a backup Haier that was around $150 which has a digital display and built-in timer along with two always-on settings and one "smart dry" setting that cycles as it's needed instead of running all the time. It's just powerful enough to handle my roughly 12x10 space but any bigger and I would need a commercial unit.

Click to expand...

The one old dehu that I have, should be a consumer model that you mentioned, but just not much function. I will try it first, as Im a bit tight on budge right now. got it all spent out for my new grow. its 10 x 5 tent in another room. Still thanks for all the inputs! its really helpful for me. especially always-on setting. I wanted to have environment controller to control the climate in the tent. I did know how can either A/C or dehu could be turn on by controller.

I should be also facing heat in a month or two. Still looking for a portable A/C for my tent. A/C should also have my humidly drop, wish me luck. but I can not find a good one with dual hose around. single hose one look not big enough for my tent. I found a model looks like industrial one but its actually for home use, with fan on one side, cool air blow out from the tube on the top of the unit. do you have any experienced use portable A/C cooling the tent? Maybe you can help me if I am doing right with my setup.

This is my thread about setting up portable A/C for cooling 10X5 tent:
https://www.rollitup.org/t/grow-tent-ac-and-climate-controls-questions.899164/#post-12353816

Much apprecaite
cheers

If you're going to be looking at adding an A/C to the space you might as well take it to the logical conclusion and seal things up with Co2. That said, I don't have any experience with portable air conditioners so I can't provide any help from first hand knowledge.

lawlrus said:

If you're going to be looking at adding an A/C to the space you might as well take it to the logical conclusion and seal things up with Co2. That said, I don't have any experience with portable air conditioners so I can't provide any help from first hand knowledge.

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Making a sealed room with A/C was what I wanted to do at first, then I realized I might be hard to sealed up the tent. heat issue for co2. After some reading ppl suggest not to run co2 unless you feel you have untimate everything. So I decide not to add co2 this time

Cheap option i use are silica bags, u need a certain quantity but they absorb a lot of moisture. I don't know how much they cost cuz i have em for free where i work, we use em for aluminium so it doesnt corrode. Spread them all around the room where you grow, preferably in the wind.

ElBartoe said:

Cheap option i use are silica bags, u need a certain quantity but they absorb a lot of moisture. I don't know how much they cost cuz i have em for free where i work, we use em for aluminium so it doesnt corrode. Spread them all around the room where you grow, preferably in the wind.

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thanks for your feedback
how do you actually have it setup? to it just put it all over your grow room or beside the intake?
I know there are some bigger ones that use for closet. Do you think that might also work?

i have some bags hanging in front of the intake and where the air leaves the tent and the rest spread around. the bags i use are industrial they're pretty big, like 5 inches by 5 and i use a lot of them. i don't know how much they cost so i can't tell if that option is economically a good idea if you don't have them for free like i do, but they help for sure.