Help! Sealed room humidity / condensation problem!

Tevo

Member
And giggles before being smart and telling me to wait longer than 20 mins for a reply check the dates of my first two posts in this thread.... 'just a thought'
 

giggles26

Well-Known Member
And giggles before being smart and telling me to wait longer than 20 mins for a reply check the dates of my first two posts in this thread.... 'just a thought'
LOL, never meant for it to come off that way. I"m a joking kinda guy and I just know realized that they were on 2 different dates, my sincerest apologizes to you.

I can admit when I'm wrong and it's not my first or last time, so sorry bro :D
 

devolv

Active Member
Thanks to the responses from people who know about sealed grows or have experience growing in this way. As for the people who said I 'Need' fresh air and to vent, I don't need fresh air I need light (lots of), co2 (without exhausting it outta the room and wasting it), and temp/humidity contral. These are the requirements for a plant aswell as food of course. The fresh air you stated I need is to replenish the co2 in the air. If I'm providing 1200-1500ppm of co2 instead of the normal amount of co2 in the air (roughly 300ppm) then it is counterintuitive to vent as it'll drag my co2 out. Please read up on ceg or sealed grows. I was asking how to decrease the humidity and/or control it more efficiently not wether I need to vent or not. Devolve how quiet is that dehuey you mentioned and how hot does it run? Looked into one but can imagine it bein extremely noisy?Superstoner cheers for your input. I have an air con (portable) but its a single hose outlet and does actually drag some air out of the room which is obviously no good in this situation. The temps are fine it's just the humidity I'm having problems handling.
my dehum is loud. buy it ducts out the bottom if I want which cuts the noise a lot. I grow in an industrial area so I don't have to worry about sound sorry. also to be fair my dehum has a 12' fan the pumps the air through it.
 

Tevo

Member
Yeah I imagined it being quite loud. I'm also in an area where sound possibly wouldn't matter but does it not look sus if ur loud dehuey is runnin all night?How long do u have it on for? How big is ur area?Am thinkin I may have to go back to venting for this run and get back to the drawing board in prep for the next run.Not what I wanted but obv better to run correct vented than incorrect sealed :/
 

chuck estevez

Well-Known Member
Yeah I imagined it being quite loud. I'm also in an area where sound possibly wouldn't matter but does it not look sus if ur loud dehuey is runnin all night?How long do u have it on for? How big is ur area?Am thinkin I may have to go back to venting for this run and get back to the drawing board in prep for the next run.Not what I wanted but obv better to run correct vented than incorrect sealed :/
you also need to figure a bigger dehu is going to produce more heat, your a/c and dehu will fight each other, so if your portable is to small, you'll have another issue to deal with.


I'm running sealed and I use a ductless minisplit a/c. I have no need to run a dehu because my a/c handles it.
 

Tevo

Member
Yeah I was thinkin that too. That seems like a power hungry way to up the electric bill. Lol.Don't think my AC is right for the job as it sucks some air out.(it's a single outlet portable AC)How much will a mini split set me back and will it be adaptable to work with a tent or does it need to be wall mounted?
 

Kittygrower

Member
Putting a pan full of rock salt in the grow room worked wonders for lowering my humidity! (with a fan and other things as well)
 

devolv

Active Member
yes the a/c and dehum fight each other. but thats just the nature of the beast. how else are you suppose to have "control" over your room. my dehum can barely keep up with my a/c. but the thing is when my a/c turns on the cold air causes the rooms RH to drop naturally. and when it turns off the RH will start to rise no matter what. so to get the RH down in between the A/C cycling you need the dehum.
 

Tevo

Member
Yeah I know. And believe me I read all the literature available to me before I attempt anything I just underestimated the size dehumidifier I needed. Didn't realise there would be that much humidity created in a sealed environment. Everythin else I've got dialled in. It's only the humidity I'm havin problems with. Would hardly say I need to do some reading up.
 

dolamic

Well-Known Member
Ok sealed and semi-sealed....I have basically a 4x2 setup in my closet. Sliding doors in front of it and I use desk fans to stir the air up. I have one fan pointing up towards my DIY carbon filter, and one blowing the heat away from the top of the LED's around the room. I have the 3 mesh passive intakes opened up on the bottom. So I'm not in a sealed environment, I have problems with humidity as well. I can only do so much in this particular setup. I use no ducting, just the ports in the case. My problem is I need to be as quiet as possible, I've heard using a Max-Fan is a good quiet fan, but still curious about other options. I have only my closet and can't drill into the walls at all to vent the air out. Are there any suggestions as to what I need to do to lower humidity before I start flowering?
 

Tevo

Member
Ok so here's the update.....

Ive been and bought myself a split ac unit. Gomna put the cooling part in the tent with a hose permanently attached to the condenser for the water to created to run permanently to drain and have the hot air unit outside the grow area not outside the building. My reasons for this is that the area outside the tent is quite large so the heat created shouldn't be an issue, if anything it should only help by keepin the temp fluctuation between night time and daytime to a minimum.
Also I can't really think of any valid reasons for running ac when it's snowing and if it was outside then any passers-by would obviously be wondering the same? Il be interested to see if anyone can come up with a valid and reasonable xplanation cos I couldnt think of one. Haha.
Will be installing it over the next few days along with my co2.

Any questions, ideas or extra input are always welcome. Thanks in advance.

Also what's the rules on setting up a journal? Specifically rules regarding scale and geographical location?
 

superstoner1

Well-Known Member
the minis are basically small heat pumps. heat pumps run in winter and nobody questions that. just say the heat is on.
 

Tevo

Member
Jus gonna try it on the outside of the grow space first off. Like I said its quite a big room so it's gonna take quite a bit to heat it up.

Also roughly how much should the split reduce the humidity by? It's a 16,000 btu split ac.

Thanks.
 
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