smaller efficient dehumidifier?

CobKits

CobKits

Well-Known Member
i have a room with multiple tents in it, i have a quest dual 105, it does a fine job of keeping the main room at whatever humidity i want, and during light cycle the tents are generally about the same humidity or slightly above depending on if co2/temp/humidity cycles are doing. however on the dark cycle, if the big room is say 75-80F and 50% humidity, with the lights off in the tent the temp drops a little and humidity is higher. like 72F/70RH. im worried about mold in these conditions. ideally there would be a small dehuey that could go inside the tent and cycle on/off to keep 50RH, but all the 30 and 50 pints are hogs and literally use as much energy as the quest. other than throwing a heater in there or ripping massive airflow thru, whats the most efficient way to keep humidity in check on the dark cycle when temps drop?

i could bring in hot dry air from outside but i like the tents operating in the big room as a lung, as the CO2 gets around and get used instead of venting out. id rather use a little more electricity keeoing the climate sealed than throw my back out lugging 20 lbers
 
Lola Grows

Lola Grows

Well-Known Member
CobKits said:
i have a room with multiple tents in it, i have a quest dual 105, it does a fine job of keeping the main room at whatever humidity i want, and during light cycle the tents are generally about the same humidity or slightly above depending on if co2/temp/humidity cycles are doing. however on the dark cycle, if the big room is say 75-80F and 50% humidity, with the lights off in the tent the temp drops a little and humidity is higher. like 72F/70RH. im worried about mold in these conditions. ideally there would be a small dehuey that could go inside the tent and cycle on/off to keep 50RH, but all the 30 and 50 pints are hogs and literally use as much energy as the quest. other than throwing a heater in there or ripping massive airflow thru, whats the most efficient way to keep humidity in check on the dark cycle when temps drop?

i could bring in hot dry air from outside but i like the tents operating in the big room as a lung, as the CO2 gets around and get used instead of venting out. id rather use a little more electricity keeoing the climate sealed than throw my back out lugging 20 lbers
Click to expand...
I have a 3.5 x 3.5 I'll post a pic of the small dehumidifier I'm using. It keeps the humidity between 49-51 ( I adjust inline speed accordingly) when the lights are on. After they're off it drops to 38-40 ( adjusting the inline gets it holding steady at 40)
I lucked up and found it on a app for 15$ they run about 59$ at target, a few different brands available ( give of take 10$)
 

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Lola Grows

Lola Grows

Well-Known Member
CobKits said:
do you have a wattsup to see how much power it draws? or does the nameplate list an amperage?
Click to expand...
:( No, I don't have one of those. I just tossed that in there and it's working out. That's all guy stuff ( complicated) but I can check the nameplate for you.
 
Underground Scientist

Underground Scientist

Well-Known Member
CobKits said:
i have a room with multiple tents in it, i have a quest dual 105, it does a fine job of keeping the main room at whatever humidity i want, and during light cycle the tents are generally about the same humidity or slightly above depending on if co2/temp/humidity cycles are doing. however on the dark cycle, if the big room is say 75-80F and 50% humidity, with the lights off in the tent the temp drops a little and humidity is higher. like 72F/70RH. im worried about mold in these conditions. ideally there would be a small dehuey that could go inside the tent and cycle on/off to keep 50RH, but all the 30 and 50 pints are hogs and literally use as much energy as the quest. other than throwing a heater in there or ripping massive airflow thru, whats the most efficient way to keep humidity in check on the dark cycle when temps drop?

i could bring in hot dry air from outside but i like the tents operating in the big room as a lung, as the CO2 gets around and get used instead of venting out. id rather use a little more electricity keeoing the climate sealed than throw my back out lugging 20 lbers
Click to expand...
I'd be curious to check one out if you find one. If not, I'm not sure why you'd need massive airflow. Is your CO2 individually plumbed to each tent? Would cutting the CO2 back during lights out affect much? I mean transpiration should be low... I have a few programmable humidistats on my toy shelves. They've gone up a bit on Amazon to 40 bucks, but you can set high and low limits so your fan kicks on when it breeches your present threshold until it falls to your low limit. Can't imagine it would take much to clear a tent.
 
Underground Scientist

Underground Scientist

Well-Known Member
The next question is, would a mini dehu pull it back and keep it to 50%, will you have to empty it daily, and will it generate heat...and does it have a humidistat or low/high settings.
 
F

Frostythesnowman88

Active Member
Lola Grows said:
I have a 3.5 x 3.5 I'll post a pic of the small dehumidifier I'm using. It keeps the humidity between 49-51 ( I adjust inline speed accordingly) when the lights are on. After they're off it drops to 38-40 ( adjusting the inline gets it holding steady at 40)
I lucked up and found it on a app for 15$ they run about 59$ at target, a few different brands available ( give of take 10$)
Click to expand...
This same dehuey did nothing in my 3x3. I sent it back.
 
F

Frostythesnowman88

Active Member
I only had 2 in a scrog. It would definitely not take in as much water per day as stated by the manufacturer. And nowhere near matches the moisture output of these plants.
 
Los Reefersaurus

Los Reefersaurus

Well-Known Member
maybe consider exchanging more air volume from the tent. You have the best dehumidifier already, you will be really disappointed if you buy another small one
 
Lola Grows

Lola Grows

Well-Known Member
Frostythesnowman88 said:
Also never heard of rh dropping during lights off. Always thought it rose during the dark period and dropped during lights on.... Maybe I'm doing it wrong?
Click to expand...
My inline fan is constantly running, also I have 2 small clip in fans inside of my 3.5x 3.5 tent. Until I added that little dehumidifier the humidity was at 70 . After one day down to 55 , by the next 49 ( this is during lights on) when the lights are off my humidity drops to 38-40 and the temps lower to 73. I'm not about to say you're doing anything wrong, I was just suggesting to the OP, a small dehumidifier that worked in my favor. Maybe you are. * shrugs*
( I'm from Southern California, maybe that's why. Idk )
 
F

Frostythesnowman88

Active Member
Lola Grows said:
My inline fan is constantly running, also I have 2 small clip in fans inside of my 3.5x 3.5 tent. Until I added that little dehumidifier the humidity was at 70 . After one day down to 55 , by the next 49 ( this is during lights on) when the lights are off my humidity drops to 38-40 and the temps lower to 73. I'm not about to say you're doing anything wrong, I was just suggesting to the OP, a small dehumidifier that worked in my favor. Maybe you are. * shrugs*
( I'm from Southern California, maybe that's why. Idk )
Click to expand...
No i know results will vary due to so many things. But ime (east coast, <10 miles from coast) those small dehuey dont help. I just wanted to add my input is all. I had better luck with a 1 gallon bucket full of calcium chloride. If it works for some than thats awesome. Sorry if i came off pompous.
 
Craigson

Craigson

Well-Known Member
Where in the tent should i place the dehu?
Near intake?

I tried it in opp corner of intake n it did basically nothing. Is it because the air is exchanging in the tent before dehu can do anything?

Outer room sits at 21C and 60rh
Tent ranges 30C 40rh to 20C 65rh.

Thx
 
O

Oskarosaurus

Member
CobKits said:
i have a room with multiple tents in it, i have a quest dual 105, it does a fine job of keeping the main room at whatever humidity i want, and during light cycle the tents are generally about the same humidity or slightly above depending on if co2/temp/humidity cycles are doing. however on the dark cycle, if the big room is say 75-80F and 50% humidity, with the lights off in the tent the temp drops a little and humidity is higher. like 72F/70RH. im worried about mold in these conditions. ideally there would be a small dehuey that could go inside the tent and cycle on/off to keep 50RH, but all the 30 and 50 pints are hogs and literally use as much energy as the quest. other than throwing a heater in there or ripping massive airflow thru, whats the most efficient way to keep humidity in check on the dark cycle when temps drop?

i could bring in hot dry air from outside but i like the tents operating in the big room as a lung, as the CO2 gets around and get used instead of venting out. id rather use a little more electricity keeoing the climate sealed than throw my back out lugging 20 lbers
Click to expand...
You could get the duct attachments for the Quest and use it as an intake fan
 
InTheValley

InTheValley

Well-Known Member
Frostythesnowman88 said:
No i know results will vary due to so many things. But ime (east coast, <10 miles from coast) those small dehuey dont help. I just wanted to add my input is all. I had better luck with a 1 gallon bucket full of calcium chloride. If it works for some than thats awesome. Sorry if i came off pompous.
Click to expand...
How long does it last?

Im thinking of DIY with something like that. Fan Pulled air from jug with something it in, panty hose filtered, and drips into a tray. I have a plan for it. Needs something till i can get a dehumidifier in the $200 range, or used on the CList. I have one in my tent, small one, but there are days it struggles to keep below 70%.

I figure if moist air is blowing over the calcium, it would absorb faster rate, then just sitting there waiting for air to pass over it.
 
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