MrUnChained

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Jul 23, 2021

#1

Simple but complicated question does a low humidity hurt plants during veg while on C02. Im aware the inverse is a huge problem mold etc. But how does low humidity distress the plant if they are watered accordingly. Just trying to piece the information together.

 

Frego

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Jul 23, 2021

#2

*watching

 

Aqua Man

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Jul 23, 2021

#3

MrUnChained said:

Simple but complicated question does a low humidity hurt plants during veg while on C02. Im aware the inverse is a huge problem mold etc. But how does low humidity distress the plant if they are watered accordingly. Just trying to piece the information together.

Click to expand...

Yes.

VPD (vapor pressure deficit)

Ok i was gonna sit down and write out a whole article but i have been lazy so instead instead I'm going to copy paste because im lazy. This is not my work so let start. You may find this very long but its worth the read. Some may want to skip ahead. I have added here and there to what i feel is...

www.thcfarmer.com

 

MrUnChained

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Jul 24, 2021

#4

Thank you that clarifies that fully. Makes sense I turned the tent temp up to 90 (with CO2) and now my girls are angry and my humiditues not in line with that makes sense now.

 

Scar818

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Jul 24, 2021

#5

You don’t really need much co2 during veg. I think 90f is a bit high also. I would advise to keep it around 81-85 and humidity around 65-70 during veg maybe even 75 if u have good air circulation

 

Aqua Man

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#6

Use a cheap IR temp gun. Shoot for leaf temp that average around 77f.... some strains can do well even at 80f. Imo air temls are really meaningless by themselves.

You can have around a 2-10f different from air temls to leaf temps. I'm not going to say 100% that 90f is to high but I'd say uts likely at least the upper limits of where you wanna be and quite possibly to high.