You can download a VPD chart and then set your controller to keep the humidity at the correct VPD for the part of the grow you are in. Seedling, veg, early flower, and late flower, and yes you will need a AC Infinity humidifier to do that, it will plug into your controller via the UIS port on the bottom of the controller via the cord they give you with the humidifier. You didn’t get a humidifier with the tent kit? Never looked to see what all you get with those kits. You can download and print VPD charts from several different places on the internet. Or just keep them as a PDF.
Marty
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Nope. Honestly, since I live in one of the more humid places on the planet, I didn’t think that would be an issue. But, I suppose we do allow ourselves some “conditioned air” in our space, so it would make sense. It’s a shame because I have these seeds sitting here.
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Get the humidifier off Amazon same price, way faster shipping. Start your seeds now and when the humidifier gets there you will be rocking. lol
Marty
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I’m glad you brought that up. The instructions that came with the tent recommended using their Humidity Dome & LED Lighting. It seems to me that I already have a tent, even though the humidity is not desirable at the moment. Is it safe enough to assume that plugging this humidifier into my controller is going to solve that? The reason I hesitate is that I’d be in a bind if these seeds sprouted and the numbers were still wacked. Am I thinking right?
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Looks complicated, but useful. I’ll have to study this. Thank you, I wouldn’t have thought of this.
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It’s not complicated at all. Just decide what temp you want to keep your tent, then read down from the RH at the top, where the two intersect, is what you want to set your AC Infinity controller VPD setting at. It will adjust the temp and or the humidifier to maintain that VPD.
Marty
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Well kinda yes and kinda no…I grew for years in a tent in the basement without a humidifier. Made lots of good smoke. I just got a humidifier this past winter for the first time ever, and I have been growing inside since around 1974 ish.
It greatly improves your grow, but is it absolutely necessary…no.
Marty
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You’re overthinking it. Start your Seeds, put a clear solo cup or similar over it if you need humidity. Remember this is a weed. It comes from places like Pakistan and Asia and everywhere else. you have several weeks before you even need to worry about making sure your environment is balanced. It’ll probably be two weeks before it’s 6 inches tall. 
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Gain an AI app like ChatGPT or Grok or Gemini tell it about yourself hobbies etc. before getting started. Once done telling it such and then ask it how or what it can do to improve your gardening game. It’ll tell you. It can diagnose leaf issues and pests giving you real-time fixes. I promise you’ll love it.
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@novicedave to give a really acurate roughtime frame. Seeds take 45 days to be big enough to flip to flower 12/12 to make maybe 1/4lb of good flower. This is why i like to clone. Seeds are not always the same and sometimes you have to find great plants in a pheno hunt. And you cant tell what the end product will be until you grow it all the way out. Which is from seed to weed. Clones root in 7-10 days and are identical to the plant the were taken from where seeds are not. Growing fom seed can be a pain in the ass. Another reason to clone is you havent grown that strain. You dont know for sure what hemisphere the seeds parents are from? It makes a huge difference where seeds come from because they need similar conditions as to where the parents came from. Arid desert or humid jungle. And have you grown it before? Because it may be hard to grow and the point is a clone gives you more time to grow the plant again. Because if say you grow it poorly and give up that doesnt mean anything about the plants genetics and its Real potential may not be reached. I prefer to keep the strain around to try it. Then i grow it a couple more times and sometimes breed them. But thats after i figure out what the strain likes and how it feeds and reacts to my enviroment. Growing is fun, tricky, difficult and also skillful. There are many ways to skin a cat right. Things to think about right. I hate A.I. wtf are a bunch of computer algorithms going to tell me about growing when i have my hands in the dirt and im looking at the plant and i have the knowledge?. The point is to learn to grow by doing it in real time and remembering how things are done. Take notes man seriously! It helps to write down what you did so you can go back and look at what happened or the last thing changed so you can figure out whats happening. When i was a teenager we had high times lol. And i worked at a nursery and learned how to grow from older guys who worked there at western gardens and were lifelong gardeners. There wasnt even internet or computers back then. We had to try and fail or try and succeed. And getting seeds was sooooo hard in the 90,s.
I dont use humidifiers because once the plant is a certain size you can control the humidity by how many leaves are on the plants! Too many leaves can create 85% humidity and almost no leaves can drop it to like 32% and depending on what media is being used. Also affects humidity.
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