How to raise humidity in grow tent?

dante76

dante76

Active Member
set my grow tent and inline fan and i've got good air circulation in my tent but the humidity is about 20% :( any ideas on how i can raise this up in the tent without a humidifier?

thanks
 
Warlock1369

Warlock1369

Well-Known Member
Depending on the size of the tent your best bet would be a cheep humidifier from rite aid. 30 bucks. But if your running MH/HPS with a hood you can put a pan of water on the hood. But it won't jump it up to high. Other then that no idea.
 
dante76

dante76

Active Member
a pan of water on the hood?? that sounds dangerous but i get the idea...i have a couple of young plants in there now and i'm testing my set up. didn't think the air from the hood would really dry out the air....duhhh..air is dry cuz the light is drying it out

i originally was circulating the air in the tent using the air coming from the end of hood...so i see why things were drying up. now i switched the fan from blow to suck. I see that air is being pulled into the tent so i'm hoping this will help...
 
Warlock1369

Warlock1369

Well-Known Member
What is your outside air RH? Mine is around 20-30 so in my room if I used outside air I would only be at 25-35 RH. I took my sons room humidifyer and took it up to 50. Any other way other then that realy won't last long. The pot of water won't be alot of RH gain and a towel will try out fast in the room so you will be changing it ally the time. Spraying the room down works good for a few minutes and if you spray the buds to much your asking for mold or bud rot.
 
dante76

dante76

Active Member
Right now my house is at 35rh and the tent is at 24rh and it looks pretty stable topping off at 78f. When i had it blowin air in it soared to 90 f and 6% rh! It's been roughly 3 hrs in at 78. See what I can do to add more rh.
 
dtp5150

dtp5150

Well-Known Member
i used to think ppl were crazy for every wanting to raise humidity. Was I wrong! Depending on your environment and grow method, it could be essential.

here was my situation...low temperatures because low light clone situation and in the winter. I then tried to use a space heater but even at the other side of the tent, raising temp about 10 degrees, the humidity dropped way too low. So no I have an idea to heat the rez up a bit ( its not frozen but my trimeter says 29 degress right now lol ) and that will solve my issues at least, because the flood n drain buckets will have much warmer water and get the area warmer and more humid at the same time..but thats just my situation...still testing
 
Warlock1369

Warlock1369

Well-Known Member
It's not ideal but you are safe. My swamp cooler went out and my room is to large for my small humidifyer. But Ive been running 70 and 26-30 RH for the last 2 weeks. But that's what I run the last 4 weeks of flower anyways. No mold. Is there a ideal range your trying for? And why? What it is outside is the best in my book just keep temps within range.

Oh and if you don't have a fan going during lights out RH will rise.
 
Kspin

Kspin

Member
I'm having the same problem. I'm also having heat problems. My humidity stays at 16. My heat is 80 to 90. I bought a small humidifier but it's not working. My setup is in a tent inside a garage. I was thinking of getting a swampcooler to cool the garage. Maybe that'll bring the heat down at least. Any advice?
 
garylee

garylee

Member
Swamp cooler is great if your plants are in veg. Temp goes down and humidity goes up. Perfect combo for my dry climate in California. Flower room is no bueno though. Temp drops good but the added humidity can put a good dose of mold in them thar buds.
 
bryangtho

bryangtho

Well-Known Member
If your growing in a tent and wont to rises your humidity. All I do is flood the floor with water as all tent have a non leak floor in them.
And spray water over your plants and this will rises it to 50% not a problem
 
Kspin

Kspin

Member
Thanks for the info. Helpful. I will be adding more plants. I wanted to see if I could do it first. Lol without wasting seeds. Will more plants increase the humidity?
 
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