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Here is a chart that I am using. I am aiming for the green band as I am switching to flower next week.
I have no control over my RH, and a humidifier is out of the question. RH was good today, but it will be back down to 29% soon...
Still monitoring the room and tracking how changes in lighting, plant count, etc affects the room environment. Also, just put a new air conditioner in there, running on fan only right now. That will change things when I turn it on also.
Still monitoring the room and tracking how changes in lighting, plant count, etc affects the room environment. Also, just put a new air conditioner in there, running on fan only right now. That will change things when I turn it on also.
Here is a well written article on VPD, well worth reading the entire article.
http://www.just4growers.com/stream/...-deficit-the-hidden-force-on-your-plants.aspx
http://www.just4growers.com/stream/...-deficit-the-hidden-force-on-your-plants.aspx
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It was how they explained it that I liked. Most anyone should be able to understand their description.
I'm not convinced however, that its all that important on a small scale like a grow tent. My VPD will suck in winter and be great in summer. But the temperature tracking is a biggy... Its one of the reasons I just swapped airconditioners, I had a portable in there. Cooled great but if it got very humid, you had to empty the moister collection tank every couple days. If you don't the fan continues to run but the airconditioner shuts off.... I was gone once for a couple days and when I got home, it was 105 F in there! I just replaced it with a window airconditioner and its keeping it nice in there. The monitor will let me know if something happens to this airconditioner before it gets that hot!
I'm not convinced however, that its all that important on a small scale like a grow tent. My VPD will suck in winter and be great in summer. But the temperature tracking is a biggy... Its one of the reasons I just swapped airconditioners, I had a portable in there. Cooled great but if it got very humid, you had to empty the moister collection tank every couple days. If you don't the fan continues to run but the airconditioner shuts off.... I was gone once for a couple days and when I got home, it was 105 F in there! I just replaced it with a window airconditioner and its keeping it nice in there. The monitor will let me know if something happens to this airconditioner before it gets that hot!
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Hey,
Sounds good @pop22 . It is important for me as I think one of my issues is to hot and dry causing some serious issues that I have yet to understand fully. I think being able to monitor it easily with the Pusle and controlling with a simple humidifier / dehumidifier will help a lot. This is my first winter without HID and the heat associated and that is prolly a big difference too.
Edit: This is the page that got me thinking. The pictures look exactly like what I am experiencing.
https://www.icmag.com/ic/showthread.php?t=153547
Sounds good @pop22 . It is important for me as I think one of my issues is to hot and dry causing some serious issues that I have yet to understand fully. I think being able to monitor it easily with the Pusle and controlling with a simple humidifier / dehumidifier will help a lot. This is my first winter without HID and the heat associated and that is prolly a big difference too.
Edit: This is the page that got me thinking. The pictures look exactly like what I am experiencing.
https://www.icmag.com/ic/showthread.php?t=153547
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