Humidity and temp control
- Thread starter Ak96
- Start date
TreeFarmerCharlie
Well-Known Member
You can only do so much with the fan. If you can't get the humidity high enough, by lowering the fan speed, then you will need to get a humidifier in there to raise it up. If the room the tent is in is that dry then you'd be better off getting a humidifier that can handle the entire room.
I only have a 2x2 tent, would a cheap humidifier do?
TreeFarmerCharlie
Well-Known Member
This entirely depends on the humidity level of the room your tent is in. If it is low then the humidifier in the tent won't do much because the dry air coming into the tent will just replace what the mist the humidifier is producing. I run one or two $30 humidifiers in my 4x4 during the winter and vent the exhaust back into the room to help keep the humidity up.
Is it not to be around 60% in vegetative though?
Just tried this - how long would it take to be effective?
BluntMoniker
Well-Known Member
I run a 2x3 tent. Ambient humidity is roughly 30% with lights on. I just added a cool mist humidifier about a week ago, set to run 30min every 2 hours.
With 2 fans running for air circulation, and my 4in inline fan running on low, I'll get rH between 40-55% depending on when the humidifier was last on. Right after the humidifier turns off, it's up in the mid 50s, and the rH steadily drops back down to around 40% before the humidifier comes back on again.
Just make sure you buy one that has an auto shutoff feature for when it runs out of water. Dont wanna destroy the machine or burn your house down. Mine was a "Safety First" brand, was like 30$
2Hearts
Well-Known Member
It would seem if you read what a lot write, the modern grow info is pretty weak though.
Next day its a nice warm day with low humidity take a walk through the countryside and see if plants are growing fast or all limp and stressed out - Easy to work the truth out without involving what some who grow cannabis think.
In some high tech commercial lettuce or tomato grow operation im sure finding the perfect humidity for each crop nets you an extra few percent on final yeilds but thats pro stuff not our concern yet.
manfredo
Well-Known Member
You should notice a difference right away...I had a closet veg grow over the winter with low humidity, as it was near my furnace. I did the bucket and fan trick and was having to add 1-2 gallons of water a day, and it got my humidity up nicely....37% isn't horrible though, and that will be great for flowering!
I rock a 4x4 and during veg I had to use a small Vicks humidifier to keep the humidity up. Telling you how I have mine setup though wont help you at all...unless you live right down the road and I doubt that lol. So equipment wise what I needed to regulate it was a humidifier, an exhaust fan with speed control and a heated fan outside the tent pushing air back in through the vents. Works well for me but I had to play with the timings, settings, and speeds to find out how to get it to hold, but once I got it there all is well.
ComfortCreator
Well-Known Member
2x2 is real small. Humidity with a cup of water. Heat is often much improved by putting a fan in an upper corner pointing down at the back of the light which helps circulate the lights heat around the tent from up top where it naturally rises up to.
I’m using LED so not sure how much that’d do. I’ll give it a bash tho!
A large, wet towel works wonders for humidity in a small tent as well. Just hang it from the top of the tent. Re-soak as required, obviously.
Awesome man, I’ve put one above the big bowl of water - it’s now at 43% and seems to be capped there but to be honest I’m quite happy with the extra 4-5%!
Was paranoid I was going to hit the LED with the wet towel and fuck myself up
ComfortCreator
Well-Known Member
Good for a couple of degrees usually. Makes the LED more efficient and safer to have a fan on it too.