Question about a good dehumid for a small lung room?

[cannafarmer420]

Even with an ac on dry and my extrator fan cruising it's 66%. I have a tiny dehumidifier but it sucks it pulls like a gallon a week out of the air....maybe

 

[Trash_2002]

Even with an ac on dry and my extrator fan cruising it's 66%. I have a tiny dehumidifier but it sucks it pulls like a gallon a week out of the air....maybe

how many liter per week you give your plants?
a good sized dehumi will be able to take all that water out in one week (plants transpire 90% of what goes in)
So for example if you give 100L/week get a dehumi that can extract 15L/Day and you will be golden, this is an oversized math but for dehumi is very good to be over gonna give you the control you need. AC helps but very little in reality.

 

[Trash_2002]

Also get a intelligent one with direct drain exit so you don't have to empty it everytime and with a digital thermostat that will adjust compressor power to achieve the RH you want and maintain there +/- 5%.

 

[BillyBanchan]

Timely post! I think I'm going to need one, too...

How big is your lung room?

 

[Trash_2002]

Timely post! I think I'm going to need one, too...

How big is your lung room?

RH is a bitch... if it gets to condensing levels at night for some days mid/late flower it could be pretty much gameover.

 

[cannafarmer420]

RH is a bitch... if it gets to condensing levels at night for some days mid/late flower it could be pretty much gameover.

I've had successfully grown a few times in her it's just getting annoying lol. I have a small one now and 1.5 gallons on average. However outdoors is very very hunid so need more capacity than that.

 

[hzydze]

I use this one inside my tent Dehumidifiers,TABYIK 35 OZ... https://www.amazon.com/dp/B09TSZTMZ2?ref=ppx_pop_mob_ap_share Makes about a 2% difference in rh. I run my portable ac on dry mode and sometimes turn on a heater at the same time. I was able to bring it down from 57% to 45% doing that.

 

[quirk]

Located in South Tx. so humidity is a problem. I use the Inofia 30 pint unit in my 300sq.ft. grow room, maintaining 52-58%RH by removing a little less than 1.5 gal/day. I drain it into a five gallon bucket with the provided hose. I'm pondering whether to use removed water for plants.

 

[quirk]

I use this one inside my tent Dehumidifiers,TABYIK 35 OZ... https://www.amazon.com/dp/B09TSZTMZ2?ref=ppx_pop_mob_ap_share Makes about a 2% difference in rh. I run my portable ac on dry mode and sometimes turn on a heater at the same time. I was able to bring it down from 57% to 45% doing that.

I would leave the heater off as warm air holds more water vapor.

 

[cannafarmer420]

I use this one inside my tent Dehumidifiers,TABYIK 35 OZ... https://www.amazon.com/dp/B09TSZTMZ2?ref=ppx_pop_mob_ap_share Makes about a 2% difference in rh. I run my portable ac on dry mode and sometimes turn on a heater at the same time. I was able to bring it down from 57% to 45% doing that.

It's 90 outside so heater may not be doable but in the winter I notice the electric heaters make humidity plummet

 

[cannafarmer420]

Located in South Tx. so humidity is a problem. I use the Inofia 30 pint unit in my 300sq.ft. grow room, maintaining 52-58%RH by removing a little less than 1.5 gal/day. I drain it into a five gallon bucket with the provided hose. I'm p

Located in South Tx. so humidity is a problem. I use the Inofia 30 pint unit in my 300sq.ft. grow room, maintaining 52-58%RH by removing a little less than 1.5 gal/day. I drain it into a five gallon bucket with the provided hose. I'm pondering whether to use removed water for plants.

I'm gonna look this model up, I also have collectibles to keep dry

 

[hzydze]

It's 90 outside so heater may not be doable but in the winter I notice the electric heaters make humidity plummet

Yeah that’ll be a problem with the high temps. Rig up a duct connecting from your ac to a side vent in your tent and maybe that’ll help with cool air being directly shot into the tent. I wish I had a for sure fix for you man. RH is a real pia at times.

 

[cannafarmer420]

Yeah that’ll be a problem with the high temps. Rig up a duct connecting from your ac to a side vent in your tent and maybe that’ll help with cool air being directly shot into the tent. I wish I had a for sure fix for you man. RH is a real pia at times.

Growing in the summer indoors is rough where I am at. I got it down to 59 currently but its a hurricane in the tent lol

 

[Trash_2002]

Growing in the summer indoors is rough where I am at. I got it down to 59 currently but its a hurricane in the tent lol

Just get a proper sized dehumi if you have the money and problem solved ;-)
Cheers

 

[hzydze]

Growing in the summer indoors is rough where I am at. I got it down to 59 currently but its a hurricane in the tent lol

Summer growing is definitely not fun. I’m growing in a garage right now. A hurricane in there I keep mine on low when I do that or aim it at the mesh vents. That’s good it came down though

 

[ScareCrowe420]

I would leave the heater off as warm air holds more water vapor.

I'm not sure if that's true or not but it's definitely irrelevant in this case. Heating a sample of air lowers it's relative humidity by default. It may have more capacity to hold water but again that doesn't really matter. What you have to understand is that when you heat something it expands. So if you have 1 cubic foot of air & you heat it you will now actually have more.

So lets say after heating you now have 1.25 cubic foot of air. Now lets say that original 1 cubic foot of air has a 20% rh. That would mean that .20 cubic feet of that 1 cubic foot sample was actually water vapor (.2/1=20%). When you heated the air you didn't add or remove any water so now the 1.25 cubic foot heated air sample still has .20 cubic feet of water in it (.2/1.25=16%) So we've lowered rh 4% simply by heating the air. Then if we use an ac unit to recool the air the AC will remove moisture via condensate & return the sample to it's original volume now with less water vapor in it.

So if you need to dehumidify if you have an ac unit & a heater if you run them at at the same time it's basically the same thing as a dehumidifier, just a really inefficient one.

 

[Captspaulding]

Located in South Tx. so humidity is a problem. I use the Inofia 30 pint unit in my 300sq.ft. grow room, maintaining 52-58%RH by removing a little less than 1.5 gal/day. I drain it into a five gallon bucket with the provided hose. I'm pondering whether to use removed water for plants.

What up south texas!

 

[cannafarmer420]

Currently my sc inifintiy extractor fan, a window ac and a small dehumidifier in the lung room its at 56 at the worst. For early flower I'm good.....now I have a few week s to figure out how to get it down the rest if the way

 

[hzydze]

Currently my sc inifintiy extractor fan, a window ac and a small dehumidifier in the lung room its at 56 at the worst. For early flower I'm good.....now I have a few week s to figure out how to get it down the rest if the way

Hell yeah man glad you got it lower! I’ve also seen some people put silica packs in the tent to dehumidify. Maybe throw a couple in there and see if that helps. I tried it but my packs were old so they didn’t do much.

 

[cannafarmer420]

I'm considering just a basement dehumid like a 2000 sq ft for for my like 150 sq foot lung room....what so you think? Running my ac and my tiny dehumid keep it around 56 to 60 currently but the ac also makes it cold so the tent is in the 70s a lot