Humidifier

Rmarine92

New Member
I have a 4x4 grow tent. I’m just learning the process and trade. Is a humidifier really necessary? I understand the purpose behind it but if I’m running the heater to keep the tent warm can I get away without a humidifier. Lmk what you think and opinions please.
Thanks!
 

jondamon

Well-Known Member
I have a 4x4 grow tent. I’m just learning the process and trade. Is a humidifier really necessary? I understand the purpose behind it but if I’m running the heater to keep the tent warm can I get away without a humidifier. Lmk what you think and opinions please.
Thanks!
It’s all governed on ambient humidity being drawn in from the area with your tent in it.

the heater will produce dry heat and lower humidity more.

then there is air exchange using fan and carbon filter removes humidity too.

your HPS lamp when it’s on dries the air as it produces heat.

so Unfortunately there isn’t a one size fits all.

personally I only use a humidifier during Veg.
 

Rmarine92

New Member
Thanks Jon! I’ve got two UV IR’s and two LED 4000/5000 and the heater, fan, vent. How long should I run the humidifier?
 

jondamon

Well-Known Member
Thanks Jon! I’ve got two UV IR’s and two LED 4000/5000 and the heater, fan, vent. How long should I run the humidifier?
I couldn’t help you with that as every scenario is different.

when I use mine I connect it to my lighting timer so it only runs during light hours.

I also have a turning dial on my humidifier to adjust the flow.

personally I like to maintain 60-70% during early veg, 40-60% during vigorous veg.

then I take it out during flowering and run around 35-45%.
 

Southernontariogrower

Well-Known Member
Thinking on this one, if I put humidifier, dehumidifier air conditioner, heater, fan in my 4x4 I might as well not plug the light in as there wouldn't be any room for plants, it would be an expensive closet. Good luck figuring this one out! Let me know what you come up with.
 

Rmarine92

New Member
Thinking on this one, if I put humidifier, dehumidifier air conditioner, heater, fan in my 4x4 I might as well not plug the light in as there wouldn't be any room for plants, it would be an expensive closet. Good luck figuring this one out! Let me know what you come up with.
Well like I said I’m brand new to this. That’s why I’m here. If you have any recommendations lmk! I’m just YouTubing everything! It’s 12° here in my state and I’m setting the tent up in my garage. I hear people say “better keep it heated” then they say to “create your own atmosphere”. I get that a heater and a humidifier counter each other so should I run them separate times? Or only heater? Only humidifier? I have a fan for circulation. Lmk your input please!
 

sf_frankie

Well-Known Member
Well like I said I’m brand new to this. That’s why I’m here. If you have any recommendations lmk! I’m just YouTubing everything! It’s 12° here in my state and I’m setting the tent up in my garage. I hear people say “better keep it heated” then they say to “create your own atmosphere”. I get that a heater and a humidifier counter each other so should I run them separate times? Or only heater? Only humidifier? I have a fan for circulation. Lmk your input please!
You run them based on need. Get a Thermometer and Hygrometer to start. Then keep an eye on temp and humidity. If its cold, turn on the heat. If the RH is low, turn on the humidifier. No one in here will be able to tell you what your tent will need.
 

Fordprefect42

Well-Known Member
Thinking on this one, if I put humidifier, dehumidifier air conditioner, heater, fan in my 4x4 I might as well not plug the light in as there wouldn't be any room for plants, it would be an expensive closet. Good luck figuring this one out! Let me know what you come up with.
On the other hand you probably don’t need to have both a humidifier and dehumidifier running at the same time. Right now I’m in flower. I have a humidifier plugged into an inkbird but no dehumidifier. I don’t need one because it’s winter and the ambient humidity is like 25% which is kind of too low even in flower. Unless you have humidity that fluctuates a lot or you want very precise control of humidity levels you probably only need one at a time. Usually I humidify in veg and dehumidify in flower but it’s been so dry I’ll probably use the humidifier all the way to the end.
 

hotrodharley

Well-Known Member
Thanks Jon! I’ve got two UV IR’s and two LED 4000/5000 and the heater, fan, vent. How long should I run the humidifier?
Check out the Inkbird humidistat or their humidistat/thermostat combo. If you’re using electric heat I can assure you that you need a humidifier. These controls will simplify your life. Get analog or manually adjustable cool mist humidifier and the controls. You won’t be sorry.
 

hotrodharley

Well-Known Member
You can humidify a tent fairly well but you must dehumidify the room a tent is in. Refer to VPD charts to set humidistats.
 
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