Humidity

Musice13buds

Musice13buds

Member
Username85 said:
The room where my tent is placed is normally 65%+. I’ve got a larger dehumidifier, but nothing crazy, I just set it to 30% and place near my tent door and has kept humidity in tent under 50%. I do get some swings in RH usually between 30~45%, I’d rather not have the swing, but it’s at least staying low
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So is there a way pipe the dry air in or just de humidifie the room the tent is in?. Which is my entire basement.
 
Stuck27

Stuck27

Well-Known Member
I put a big dehumidifier outside of my tent and bought a smaller one for inside just incase. Found it a lot easier to control the tent once I lowered the humidity of the room. A small one for the tent wouldn't be a bad idea!
 
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thefullspectrum

Well-Known Member
All this crap about keeping rh under 45% during flower is just that, crap. Many strains thrive on high humidity in flower. I've just flowered out 2 grows in 70-80% as I draw from outside. I make sure the exhaust is on 24/7 and you have a shitload of fans in the tent. I like to see every leaf moving almost continuously.
 
U

Username85

Well-Known Member
Musice13buds said:
So is there a way pipe the dry air in or just de humidifie the room the tent is in?. Which is my entire basement.
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I don’t pipe it in, I just place it next to the tent. It might dehumidify your entire basement, but if you keep it close to the tent it should do what you need inside. Keep in mind that a dehumidifier can add heat to your environment
 
Musice13buds

Musice13buds

Member
thefullspectrum said:
All this crap about keeping rh under 45% during flower is just that, crap. Many strains thrive on high humidity in flower. I've just flowered out 2 grows in 70-80% as I draw from outside. I make sure the exhaust is on 24/7 and you have a shitload of fans in the tent. I like to see every leaf moving almost continuously.
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What about physical water on the inside of the tent. With plenty of air flow that should go away?
 
Rufus T. Firefly

Rufus T. Firefly

Well-Known Member
Musice13buds said:
I never see any bugs at all. How can I improve the critter problem?
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They are sneaky bastards and, depending on the type of bug, you may only see the damage.

You can use Spinosad (Captain Jacks et al) it's not gonna kill ya but IMHO it's right on the "organic" threshold. Some folks say it's OK some don't. I wouldn't use it in flower and there seems to be consensus on that.

DoubleAtotheRon knows more than I do and knows the medical market so if he uses it you I think it's safe to assume it's one of those if used right substances it will pass testing...for his state. Every state is different. My point is this, there really isn't a ton of research out there on what these compounds may or may not do when combusted. It may say OMRI on the package but that means it's been researched to be safe to orally ingest.

You're going to have to decide what your comfortable with and what you aren't. That's probably my number two reason to start growing, I would know exactly what I was consuming.

Anyway sorry for the diversion lol, Good luck!
 
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Musice13buds

Musice13buds

Member
Rufus T. Firefly said:
They are sneaky bastards and, depending on the type of bug, you may only see the damage.

You can use Spinosad (Captain Jacks et al) it's not gonna kill ya but IMHO it's right on the "organic" threshold. Some folks say it's OK some don't. I wouldn't use it in flower and there seems to be consensus on that.

DoubleAtotheRon knows more than I do and knows the medical market so if he uses it you I think it's safe to assume it's one of those if used right substances it will pass testing...for his state. Every state is different. My point is this, there really isn't a ton of research out there on what these compounds may or may not do when combusted. It may say OMRI on the package but that means it's been researched to be safe to really ingest.

You're going to have to decide what your comfortable with and what you aren't. That's probably my number two reason to start growing, I would know exactly what I was consuming.

Anyway sorry for the diversion lol, Good luck!
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So im a week into flower. If you were in my situation, what would you do?
 
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thefullspectrum

Well-Known Member
Musice13buds said:
What about physical water on the inside of the tent. With plenty of air flow that should go away?
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Oh shit had a look at that 2nd pic in your OP, thats wet! Big difference between humidity and 'Saturation' I suppose. Sorry I should have looked.

I've never had visible water and its sat at 90% for extended periods during a storm etc.. I suppose its very condition specific too. Southern Hemisphere summer here. Im drawing from outside into a heavily insulated 1300mm x 700mm grow room built in a small garden shed, and exhausting into same vented garden shed.

While ive never grown in (or barely ever seen) a basement, lol. I'd imagine drawing and expelling into the same barely ventilated humid damp space is asking for trouble and your whole problem.

My exhaust system is replacing the rooms air with fresh outside air almost 24/7. The 3 x 300mm box fans running on the same timer blow the shit out of everything, but gently, lol. Needs to be pretty extreme wind to cause damage, so dont be put off by hurting the girls. Everything turns off for 15 mins every 4 hours atm.

I use temp and humidity controllers for exhausting and heating during winter but found during summer its better running almost 24 hours a day on a simple analogue timer.

If you cant control those basement conditions, can you draw from and exhaust elsewhere, using ducting? That site is a prime candidate for mould.
 
Musice13buds

Musice13buds

Member
thefullspectrum said:
Oh shit had a look at that 2nd pic in your OP, thats wet! Big difference between humidity and 'Saturation' I suppose. Sorry I should have looked.

I've never had visible water and its sat at 90% for extended periods during a storm etc.. I suppose its very condition specific too. Southern Hemisphere summer here. Im drawing from outside into a heavily insulated 1300mm x 700mm grow room built in a small garden shed, and exhausting into same vented garden shed.

While ive never grown in (or barely ever seen) a basement, lol. I'd imagine drawing and expelling into the same barely ventilated humid damp space is asking for trouble and your whole problem.

My exhaust system is replacing the rooms air with fresh outside air almost 24/7. The 3 x 300mm box fans running on the same timer blow the shit out of everything, but gently, lol. Needs to be pretty extreme wind to cause damage, so dont be put off by hurting the girls. Everything turns off for 15 mins every 4 hours atm.

I use temp and humidity controllers for exhausting and heating during winter but found during summer its better running almost 24 hours a day on a simple analogue timer.

If you cant control those basement conditions, can you draw from and exhaust elsewhere, using ducting? That site is a prime candidate for mould.
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So I've been running my exhaust full blast for about 24hrs now and my humidity has come down to 30% and holding. Have not seen any more water but I will be keeping a close eye on it. Thanks for all the advice.
 
Musice13buds

Musice13buds

Member
Okay so my humidity is down to a consistent 30% no more water on the walls of my tent. And just sprayed captin jacks on my plant last night waiting a few days to see how it reacts. Thank for all the advice from everyone much appreciated!
 
M

Moist.Farms

Member
Musice13buds said:
VPD? sorry I'm not up on all the Acronyms.
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It stand for Vapour-pressure deficit

Essentially it is the perfect relationship between humidity and temperature. (and leaf temp but thats for later)
Each degree has a specific humidity point that is most optimal for our plants.
Or vise versa, each humidity point has an optimal temp.

This is your next step in environmental controls, if you want to take it. While its amazing that you're now at a stable place, sitting at 30% humidity all the time isnt exactly what the plants actually want. Doing some research into what is VPD and how to achieve the most optimal levels will bring your growing to another level!
 
Bukvičák

Bukvičák

Well-Known Member
newbuddy said:
Lotsa small ones out there
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If you are not able to control humidity in the room where the tent is than you most likely wont be able to control humidity inside the tent neither. All you can do is to keep good air movement with constant exhaust or buy real dehumidifer with compressor and refridgerant. Just please do not waste your money on those cheap pseudo dehus, they wont make a shit.
 
Musice13buds

Musice13buds

Member
Moist.Farms said:
It stand for Vapour-pressure deficit

Essentially it is the perfect relationship between humidity and temperature. (and leaf temp but thats for later)
Each degree has a specific humidity point that is most optimal for our plants.
Or vise versa, each humidity point has an optimal temp.

This is your next step in environmental controls, if you want to take it. While its amazing that you're now at a stable place, sitting at 30% humidity all the time isnt exactly what the plants actually want. Doing some research into what is VPD and how to achieve the most optimal levels will bring your growing to another level!
Click to expand...
Just downloaded a graph. I will be studying this to improve my grow. Thanks for the knowledge.
 
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