Take The Vpd Poll. How Important Is It?

mittenmedgrow · Nov 22, 2015

I was just making a little joke there. I run 80 to 85f, 70 to 75% with anywhere between 1000 and 1200ppm co2 in veg through the second week of flowering then start to reduce temp humidity and co2. by fourth week running 72 to 75 degrees about 50% humidity and around 600 ppm co2. I grew indoors for quite a few years before the internet came around and never even heard of vpd until I started lurking on the farm back in 08. I think that you would have to be pretty far out of wack for vpd to really come into play. Plants will grow happy and healthy in a pretty big range of temps and humidity.

ShroomKing · Nov 22, 2015

Today my flower tent is 83*f and a rh of 32%.
I would raise humidity if I could , but that's not an option for me.
I would love to do a side by side.

DemonTrich · Nov 22, 2015

My side by side in my veg room tells the truth.

YaBuddy321 · Nov 22, 2015

mittenmedgrow said:
Vpd I would never spray that shit on my plants, sounds toxic.

Lol

YaBuddy321 · Nov 22, 2015

ShroomKing said:
Hmmm ok.
So I need to fix my vpd? Because I am way off. View attachment 550987
This must be a fluke then....View attachment 550985

Haha that's funny bro I don't think that's a fluke that's skills! But do you think because that meter is on top of the warm light the humdity may be higher where the plant tops are? Maybe?

ShroomKing · Nov 22, 2015

YaBuddy321 said:
Haha that's funny bro I don't think that's a fluke that's skills! But do you think because that meter is on top of the warm light the humdity may be higher where the plant tops are? Maybe?

The humidity is constant throughout the whole house and at all levels in the tent. But that spot is the hottest spot in the tent. I think I get a few crispy leaves because of low rh, high airflow, and because I push the nutes towards middle of flower.

As far as it being skill, man I don't know, I think I just get lucky. Lol

I know my gardens environment is not perfect. It's too hot and too arid. But it IS consistent, which is important. For me, I select phenos that thrive in what I have provided. A few of the shops I've vended to have said the same thing, "you have very frosty buds compared to others". It might be a result of my low rh.
But I do tend to believe the cannabis plant can adapt to the environment it's born into. This is an immature flower, picked around day 50 and quick dried in my low rh. But it is something special.
KromeswhitexUlimatechem08

fishwhistle · Nov 22, 2015

Ran across this article this morning,these guys are using humidity levels (35-40%)to ward of pests and contaminants so they can pass state of washington lab tests.
http://www.marijuanaventure.com/benefits-sealed-grow-consistency-quality/

sixstring · Nov 22, 2015

ShroomKing said:
Hmmm ok.
So I need to fix my vpd? Because I am way off. View attachment 550987
This must be a fluke then....View attachment 550985

Aint no thang but a chickan wang,looks perfect to me bro :)

sixstring · Nov 22, 2015

We got snow so now my room is sitting around 76f and 30% today.girls look happy to me :)
Tried to get some pics but it said change battery when i tried to turn on my crusty cam

ShroomKing · Nov 22, 2015

fishwhistle said:
Ran across this article this morning,these guys are using humidity levels (35-40%)to ward of pests and contaminants so they can pass state of washington lab tests.
http://www.marijuanaventure.com/benefits-sealed-grow-consistency-quality/

Those guys might know what's up. Great article!

ClassV · Nov 22, 2015

ShroomKing said:
I know my gardens environment is not perfect. It's too hot and too arid. But it IS consistent, which is important.

Well said, ShroomKing.

3N1GM4 · Nov 24, 2015

Mine are lucky if they get watered

Savage Henry · Nov 24, 2015

An interesting read on the subject for those interested:http://ohioline.osu.edu/aex-fact/0804.html

FiveAM · Nov 24, 2015

Science the shit outta weed..

If it looks dank, smells dank, smokes dank...must be.

ken dog · Dec 12, 2015

ShroomKing said:
Ive seen users claim vpd parameters were why a new users plants were showing deficiency, in the infirmary threads.

Is this even possible?

Absolutely yes... Your plants can get to the point where they will not transpire any nutrients or water... And essentially lockout.

ken dog · Dec 12, 2015

ShroomKing said:
Hmmm ok.
So I need to fix my vpd? Because I am way off. View attachment 550987
This must be a fluke then....View attachment 550985

No offense, but it does seem a bit dry.

ken dog · Dec 12, 2015

ShroomKing said:
Today my flower tent is 83*f and a rh of 32%.
I would raise humidity if I could , but that's not an option for me.
I would love to do a side by side.

That would be cool.

I think if anything, it is better to be too dry, than too humid... with respect to mold, fungus, and bud rot.

noone88 · Dec 14, 2015

Humidity is the last factor that I try to manipulate. Temperature, co2 levels, and air movement are what I rank as top 3.

Adding humidity to the dry SoCal air using RO water and humidifiers is not easy. Your humidifiers will be running the whole time during the light cycle.

fishwhistle · Dec 14, 2015

noone88 said:
Humidity is the last factor that I try to manipulate. Temperature, co2 levels, and air movement are what I rank as top 3.

Adding humidity to the dry SoCal air using RO water and humidifiers is not easy. Your humidifiers will be running the whole time during the light cycle.

Not to mention its a pain in the ass,more equipment,RO water to not make a mess on your lamps or glass etc.

noone88 · Dec 14, 2015

Who doesn't love white particulate matter over everything?!?!

Take The Vpd Poll. How Important Is It?

Take The Vpd Poll. How Important Is It?

How important is (VPD) Vapor Pressure Differential in your garden?

Very Important!

It means nothing..........MuHaHaHa!

I just want to smoke weed.

mittenmedgrow

ShroomKing

Best of luck. Peace

DemonTrich

YaBuddy321

YaBuddy321

ShroomKing

Best of luck. Peace

fishwhistle

sixstring

sixstring

ShroomKing

Best of luck. Peace

ClassV

3N1GM4

Savage Henry

FiveAM

ken dog

ken dog

ken dog

noone88

fishwhistle

noone88

Take The Vpd Poll. How Important Is It?

Take The Vpd Poll. How Important Is It?

How important is (VPD) Vapor Pressure Differential in your garden?

Very Important!

It means nothing..........MuHaHaHa!

I just want to smoke weed.

mittenmedgrow

ShroomKing

Best of luck. Peace

DemonTrich

YaBuddy321

YaBuddy321

ShroomKing

Best of luck. Peace

fishwhistle

sixstring

sixstring

ShroomKing

Best of luck. Peace

ClassV

3N1GM4

Savage Henry

FiveAM

ken dog

ken dog

ken dog

noone88

fishwhistle

noone88

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