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Questions [Completed] AC infinity VPD

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Topic starter

My understand for VPD there is 2 scales one for veg and one for flower. As I have 2 drawings from pulse. 
which scale does AC infinity on the 69pro controller? And how do you differentiate between them. ? 

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7 Answers
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I have the same controller and tried to set it up the same way by VPD but it's easier if you just set your temperature and humidity triggers and keep an eye on your VPD and it will fall right where it needs to....it's just a way to combine temp and humidity in a quantitative answer.....for people who understand in numbers better.

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Topic starter

Maybe the scale is the same but where you are suggested to be is different? I  Still need the drawing of the scale they use for data point reference. 

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So based on what I was told during veg you should target a VPD of 0.8-1.1 for veg and 1.0-1.35 for flower with/without an exhaust system but you can run a higher VPD for flower if you’re supplanting CO2 which I do not do. 

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Topic starter

Yh it’s nowing the scale so I can set the triggers to buff it within range, I can kinda guess and using the pulse drawing and watching the vpd number.
 @27 with a -2 for leaf temp 60% - 68% puts me between 0.8-1. 

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GrowDad GrowDad May 20, 2023 11:39 am
@goldseal94 You can set up parameters on the Pulse App to alert you if a certain number falls to high or too low if that helps. Your numbers sound like they are on point if you’re currently in veg 
SG2 SG2 Topic starter May 20, 2023 11:49 am

I haven’t got the pulse mate.(£500 😱)  Just a print out of the scale. 

Sevans Sevans May 21, 2023 1:57 am

@sg2 you can set alarms and alerts within the ac infinity controller app. You don’t need pulse if you have the ac infinty Wi-Fi controller, unless you want a back up “monitor”. 
go here to set up automation and alerts (see pic). I have a larger humidifier on the way, mine is running 100%, as the controller is running the exhaust fan faster to bring temp down, I need a bigger humidifier to compensate, then as temp comes down and RH increases, VPD comes down!

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BTY, my controller is controlling my exhaust fan as well as my humidifier. 


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Topic starter

And the offset for the intensity of the AC humidifier.  So it doesn’t jump +20%. Tricky to get it right. @growdad

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Topic starter
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Topic starter

I think a 8% fluctuation on humidity for veg is more than adequate in a such a small space, Im happy with that. 👍🏻 my Macky tree ( lemon tree ) will love that.   

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GrowDad GrowDad May 20, 2023 7:47 pm

@goldseal94 Ok. I see what your talking about with the 8% change in humidity. I don’t need to run a humidifier as i’m minutes from the Atlantic coast…Lol, I don’t have the Pulse Pro(I wish). I have the pulse one it allowed me to set up a template and it would notify me if my VPD/Temp/Humidity/Lights coming on/off at the wrong time  Sends me an email.

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