Dehumidifier recommendations

Veggietative

Active Member
Hello.

I have a 2x2 tent with a 200 CFM fan blowing out through a filter into the room.

I got a sweet deal on this badass toshiba dehumidifier for $100. It’s too big for the tent.

I noticed a mildew smell and checked my RH at “night” to find out it was in the 60s.

So I put my Dehumidifier closer to the tent intake with it blowing straight into the tent.

So now the RH at night is on point but it gets up to 90 degrees during their night time.

I thought about modifying the dehumidifier to blow through a hose into the tent and extending the wiring on the dehumidifier’s humidistat to get it INTO the tent so it could monitor the internal RH.

My central AC blows air at about 60% RH it’s very humid outside. A portable AC is out of the question.

Would like to hear any suggestions, thank you.
 

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Rurumo

Well-Known Member
I just use a dehumidifier in the room that I grow in, since the tent is constantly venting from/back to it. You need a humidifier that utilizes a compressor, not the low wattage peltier units. I hate adding another high wattage device to my grow, but I couldn't get around it....I blame my adorable turtles!! Anyway, check out the homelabs dehumidifier on Amazon rated for 1500 sq feet-it uses about 250 watts. Ignore the square foot recommendations. Just get one that uses 200-300 watts and is UL or ETL certified. Be sure you check the amps/watts before you buy it because some of these things use as much power as a space heater.
 

Veggietative

Active Member
I just use a dehumidifier in the room that I grow in, since the tent is constantly venting from/back to it. You need a humidifier that utilizes a compressor, not the low wattage peltier units. I hate adding another high wattage device to my grow, but I couldn't get around it....I blame my adorable turtles!! Anyway, check out the homelabs dehumidifier on Amazon rated for 1500 sq feet-it uses about 250 watts. Ignore the square foot recommendations. Just get one that uses 200-300 watts and is UL or ETL certified. Be sure you check the amps/watts before you buy it because some of these things use as much power as a space heater.
I’m pretty sure mine has a compressor. Sorry I forgot to mention it’s a toshiba 50 pint. Maybe it’s too big?
 

Rurumo

Well-Known Member
I’m pretty sure mine has a compressor. Sorry I forgot to mention it’s a toshiba 50 pint. Maybe it’s too big?
Oh it definitely has a compressor, I'm sure it will work fine in your room. Have you tried using it outside of your tent, but in the same room your tent is in? I would check the power draw, just so you know how much power you're paying for, and to be sure you aren't going to draw too much from the same circuit that your lights are on.
 

Veggietative

Active Member
Oh it definitely has a compressor, I'm sure it will work fine in your room. Have you tried using it outside of your tent, but in the same room your tent is in? I would check the power draw, just so you know how much power you're paying for, and to be sure you aren't going to draw too much from the same circuit that your lights are on.
Honestly I can’t afford the $40 for a kWh meter. Everything is plugged into the same power strip going into the same outlet.

The picture included is of my dehumidifier outside my tent with the vent pointing towards the vent on my tent. It just raises my temperature into the high 80s at “night”
 

Rurumo

Well-Known Member
Honestly I can’t afford the $40 for a kWh meter. Everything is plugged into the same power strip going into the same outlet.

The picture included is of my dehumidifier outside my tent with the vent pointing towards the vent on my tent. It just raises my temperature into the high 80s at “night”
You don't need a meter, just figure out which outlets connect to the circuit you are using, then add up the watts of everything you have plugged into it. If you trip your breaker, you know you've gone over, but to be safe, you should only run 1200 watts on a 15 amp breaker (80% of a circuit's listed amps). It's just a good idea to get to know how many amps/watts you are using on each circuit in your house.
 

raggyb

Well-Known Member
68% at “night”. I set up my dehumidifier in the other room and it’s staying at about 50% now at 77 degrees
sounds like you figured it out. A thought I have for you though is put the dehumidifier on the timer. I just say because I always try what doesnt cost me anything first, and see if it works. If you have a spare timer that is. It solved my prob for a while my room was too hot with it on all the time so I time it to go on and off and it kept it from getting too hot or too humid.
 

Veggietative

Active Member
I ended up getting a Vivosun mini dehumidifier. So far so good 46% RH and 77* at the canopy. I’m curious to see what nighttime RH is.
 

Rurumo

Well-Known Member
Nighttime is rough for humidity for me too. You could always run your lights at night, that helps me a lot. I have one of those small dehumidifiers too and it just couldn't cut it, but that's because I have turtles splashing around in 80 degree water 24/7 (even though I try to keep them mostly covered.) My new dehumidifier works great but it eats up more power than I'd like, hopefully the vivosun works for you.
 

Veggietative

Active Member
Nighttime is rough for humidity for me too. You could always run your lights at night, that helps me a lot. I have one of those small dehumidifiers too and it just couldn't cut it, but that's because I have turtles splashing around in 80 degree water 24/7 (even though I try to keep them mostly covered.) My new dehumidifier works great but it eats up more power than I'd like, hopefully the vivosun works for you.
Well I run my lights at night. I’m referring to nighttime as lights off
 

Veggietative

Active Member
What is that 1 cup every 24 hours?? Seems like a waste of money to me
Yeah I know right? It’s less than a cup. I have until January 21st to return it. It seems like it’s made for this exact application and it can’t even manage a 2x2
 

Rurumo

Well-Known Member
I have a similar one to yours and it removes about a cup per day too. I think they have their uses, like in a clothes closet or something, but it just wasn't enough for me. If it can't handle your humidity, I'd try to return it and then get a compressor dehumidifier. You'll be amazed at how much water they suck out! I was in exactly your same situation.
 

Veggietative

Active Member
I have a similar one to yours and it removes about a cup per day too. I think they have their uses, like in a clothes closet or something, but it just wasn't enough for me. If it can't handle your humidity, I'd try to return it and then get a compressor dehumidifier. You'll be amazed at how much water they suck out! I was in exactly your same situation.
I might just have to downsize from my 50 pint then hm
 
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