Air exchange vs Humidity

[Bjg]

So my question is how do you juggle keeping humidity down in flower when constantly exchanging more humid air. Like on a rainy or even a humid day.
My Tent is in a garage(lung room) which i have 2 dehumidifiers, a 35 and 20lt/day and an aircon. I can just keep humidity levels around 50% running both dehuey full time. The tent has an intake and axhaust fan. I want to be able to control humidity down to 40% at least. i assume my only option is to go bigger dehumidifiers. ive been looking into desiccant dehumidifiers im not sure if these have better drying ability below 50%
any tips would be much appreciated
Thanks

 

[HydroKid239]

You don’t necessarily need humidity below 50% in flower, and definitely don’t want humidity that low while you are trying to drag out a long 10-14 day dry. Don’t over think. If all is well now.. keep it pushing. Sounds like you’re doin fine.

 

[CaliRootz88]

So my question is how do you juggle keeping humidity down in flower when constantly exchanging more humid air. Like on a rainy or even a humid day.
My Tent is in a garage(lung room) which i have 2 dehumidifiers, a 35 and 20lt/day and an aircon. I can just keep humidity levels around 50% running both dehuey full time. The tent has an intake and axhaust fan. I want to be able to control humidity down to 40% at least. i assume my only option is to go bigger dehumidifiers. ive been looking into desiccant dehumidifiers im not sure if these have better drying ability below 50%
any tips would be much appreciated
Thanks

Don't let higher humidity levels scare you. Look at a vpd chart for veg and flower. With good air exchange, good air flow, and hitting vpd based on your current grow cycle you should be fine.

 

[Bullmark]

Don't let higher humidity levels scare you. Look at a vpd chart for veg and flower. With good air exchange, good air flow, and hitting vpd based on your current grow cycle you should be fine.

I echo everything said….50% isn’t that high for flowering….although I would prefer lower myself. I have the same issue on extremely hot days, which have been almost every day recently. Keep the air moving and an eye on any bud rot or mildew popping up.

 

[Hiphophippo]

50% is just fine even Great if you ask me I’ve had to deal with 65% before in flower and it’s a pain In the ass. Growing should be easy and if you have your tent dialed in to maintain 50% and can easyily keep your temps right I wouldn’t worry about it and just keep growing.

 

[ProPheT 216]

Agreed with above. Also it's summer. Run an ac in the room that the tent is in not a dehumidifier, that adds heat in turn more water in the air.

 

[Herb & Suds]

Shutting down in summer months is an option

 

[Billy the Mountain]

Agreed with above. Also it's summer. Run an ac in the room that the tent is in not a dehumidifier, that adds heat in turn more water in the air.

That's ass-backwards and not how relative humidity works

Adding more heat will LOWER relative humidity

 

[ProPheT 216]

That's ass-backwards and not how relative humidity works

Adding more heat will LOWER relative humidity

Yes it will, but when the lighs go off and you have a temp swing you will have more humidity to deal with than if you had a buffered room around your tent keeping a steady temp and humidity

 

[Lenin1917]

Shit, I’m dealing with humidity issues rn with 75gallons of soil in my flower tent. Just had to turn the heater on and up the ac to 85 to bring rh down during lights off(on top of the 50pint/day dehumidifier and 8in exhaust fan ducted outside at full blast). My electric bill fixing to be high af.

 

[Lenin1917]

That's ass-backwards and not how relative humidity works

Adding more heat will LOWER relative humidity

What you’re saying is technically correct, but air conditioners do also dehumidify because of the condensation on the cooling coils

 

[Billy the Mountain]

What you’re saying is technically correct, but air conditioners do also dehumidify because of the condensation on the cooling coilsView attachment 5157743

Absolutely

I wasn't questioning air conditioners, just the "not a dehumidifier, that adds heat in turn more water in the air" statement

 

[Lenin1917]

Shit, I’m dealing with humidity issues rn with 75gallons of soil in my flower tent. Just had to turn the heater on and up the ac to 85 to bring rh down during lights off(on top of the 50pint/day dehumidifier and 8in exhaust fan ducted outside at full blast). My electric bill fixing to be high af.

Second dehumidifier procured!

 

[ProPheT 216]

That's ass-backwards and not how relative humidity works

Adding more heat will LOWER relative humidity

It lowers rh but also warm air absorbs water much better, is better at wicking, and hold more water. So you incourage wicking of water into the air by increasing temp even tho the number will lower. Then a temp drop quickly brings rh to spiking levels.

 

[ProPheT 216]

@Billy the Mountain
@bk78

I see and understand your point. I guess I just view it differently. I want to keep water out of the air, not raise temp to accommodate water in the air.

 

[Billy the Mountain]

@Billy the Mountain
@bk78

I see and understand your point. I guess I just view it differently. I want to keep water out of the air, not raise temp to accommodate water in the air.

You're ignoring the relative aspect of relative humidity

 

[ProPheT 216]

Your ignoring the fact that warm air draws up moisture. Air does not have to be saturated but warmth encourages it. Your dew point will be higher using a dehumidifier vs an ac

 

[Billy the Mountain]

Your ignoring the fact that warm air draws up moisture. Air does not have to be saturated but warmth encourages it. Your dew point will be higher using a dehumidifier vs an ac

Really?

Please show your math

 

[Snickerpus]

Really?

Please show your math

You're ignoring the relative aspect of relative humidity

 

[ProPheT 216]