Ok this is my new set up for my third time of trying to cultivate I still cannot understand with a humidifier and a bucket of water how the humidity in the tent stays a solid 47 percent smh right now I also have a fan and vent running I think without those two on the heat would sore up to 90 something degrees. Also I see a few plugs on the side of my light I was wondering if it’s possible to manipulate the light to get a certain degrees from it.
I have been using a space heater in the grow room, and my light up high both in position and setting to generate heat. I have an open (large surface area) container of water with some hydroton in it to give it more surface area as well as a humidifier.
I also have my controller set up to balance between the humidifier and the venting, so the vent isn’t running when the humidifier is. That makes a huge difference.
Play around with that and see what you can do. Try just not venting for a while and seeing what happens. Fans are fine, they’ll just circulate the humidity.
Do an experiment where you turn off the exhaust fan and crank your humidifier up and see where your temperature ends up. If that brings the temps down and humidity up, you can put your exhaust fan on a timer for 5-7 minutes per hour, at least until the plants are big enough to need more fresh air.
Hey thanks for the advice I’m trying it now
I’m following for this. I don’t struggle with high humidity. I’m always wanting to learn new things.
I turned off the vent but now the heat jumped to 91.8 and the humidity is 78
If your not already running your lights at night during the coolest part of the day, doing so may help with excess heat.
Is the led light set to low?
I ask because you do not need a great amount of light at this point and the driver and leds are a significant heat source.
That bucket of water would do more if you had a wicking surface and air movement or and aquarium air pump and air stone. One of the larger ones that will throw tiny droplets into the air (no fan for this one…
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Cheers
G
Buy one of these INKBIRD Digital Temperature Controller Dual Stage Thermostat ITC-308
and have your exhaust fan kick in when it hits the temp you want to start exhausting hot air.
Don’t worry about VPD so much, dialing VPD in is an advanced technique. Just focus on the basics to start. In my opinion the most important factor in any grow environment is air flow, a proper amount of air moving through the space as well as enough fresh air moving into the space. In a tent I keep an intake fan and exhaust fan moving air into and out of the tent while I keep as many clip fans in there to ensure the air get circulated to every part of the tent.
I see you have an exhaust fan, is it adjustable or does it only have a single setting? Do you have any fans pushing air into the tent? Do you at least have a vent open to allow fresh air to move in?
Is your light dimmable or is the only way to reduce the intensity by unplugging bars?
When it comes to your humidity, you are moving air out of the tent at a rate faster than you can humidify it. Without slowing the rate of exhaust you aren’t going to be able to get that humidity up where you would like it. You are also likely fighting the air around the tent, it is likely still has a lower RH than you would be looking for; now whatever fresh air making it into the tent is again lowering the overall RH. So not only do you have to address the RH in the tent but outside of the tent as well.
So while all of these environmental parameters are the ideal I can assure you you can have a very successful grow with the parameters not being 100% on point. As long as all your factors (air, temperature/RH, available rhizosphere oxygen and water/food) are in balance you can achieve great results with parameters that seem less than ideal.
As soon as I take them out of the humidity dome and put it in the grow tent they start to die at this point I think im through anybody wants to buy a grow tent lol
Well, growing is a lesson in patience so maybe that is the lesson you are being taught from this plant at the moment. This plant will teach you things about yourself. I don’t use domes for seedlings. Never had to, they always did better for me with the less is more approach. Hope you find the sweet spot. Good luck and keep trying.
I agree with @GreenHighland I don’t use humidity domes for seedlings, they develop their roots first so they can take up moisture from their root zone immediately. With no dome they come out and have to acclimate to the climate immediately. When using a dome you have to ease the plants out of the dome rather than just take it off and say ‘OK’.


