Vpd Survey

[MIMedGrower]

First of all its not money, its the fucking planet.
Secondly thats what i’m talking about. I’m not saying it increases potency. Not saying more trichomes means more potency. I’m just saying it causes heightened resin production. This is due to environmental stress. So you cannot expect a stressed out plant to produce better. You may see more trichomes but without a lab test it doesn’t mean shit.

Now you’re agreeing with me. :-)

 

[MIMedGrower]

The main message here is an important one for them. Don't get caught up in conversation and mind your sources. You have to build your own way of scrutinizing information and i would hope this thread would inspire them to keep it simple and research basic plant science. Might just be me that gets that though.

You said that much better than I did.

 

[crimsonecho]

Now you’re agreeing with me. :)

Dude we were agreeing with each other for sometime :)
Just we don’t seem to get our points across.
Just saying, lets not call vpd a bullshit cause its not. Lots of stupid practices to get healthier plants with more thc and stuff but keeping your plant happy and out of stress should logically get you the best results.
If you want to manipulate this process in order to get more resin. Thats a personal choice. Would it work? Possibly. Would it be a better plant overall? I don’t think so, you’re stressing it.

 

[1diesel1]

The main message here is an important one for them. Don't get caught up in conversation and mind your sources. You have to build your own way of scrutinizing information and i would hope this thread would inspire them to keep it simple and research basic plant science. Might just be me that gets that though.

I like the approach.

 

[crimsonecho]

Fuck i don’t even utilize this chart in anyway haha.
Having a hard time walking away from stuff i guess. Need to work on that. :)

 

[Daikokuten]

You said that much better than I did.

I appreciate the amount of work you do for strangers. I don't involve personal bias with information, but i appreciate that you put in real effort and enjoy your contributions. Same to crimsonecho and everyone else participating. In current times effort is seen as cringy, or embarrassing to a lot, but solves critical problems for some. Without posts like these i know at least i would have a horrible quality of life because they've played such a fundamental role in my life with plants and illness, which both radically influence and literally determine how good my life is. This stuff matters, no matter how arbitrary it might feel to some.

 

[MIMedGrower]

Dude we were agreeing with each other for sometime :)
Just we don’t seem to get our points across.
Just saying, lets not call vpd a bullshit cause its not. Lots of stupid practices to get healthier plants with more thc and stuff but keeping your plant happy and out of stress should logically get you the best results.
If you want to manipulate this process in order to get more resin. Thats a personal choice. Would it work? Possibly. Would it be a better plant? I don’t think so, you’re stressing it.

I never said anything about trying to get more resin with stress.

And I’m still saying following that chart in my indoor growroom would be way too risky.

 

[crimsonecho]

I never said anything about trying to get more resin with stress.

And I’m still saying following that chart in my indoor growroom would be way too risky.

Yeah thats the part we disagree. Ok. We don’t have to agree. I’m not having any problems with high rh. Some other person could. You’re not against the sweet spot probably being sweet but you’re saying it can cause problems, if i got that correctly. I’m not having any issues at the moment.

 

[Rootbound]

Well i can not say anthing on that i havent seen the paper but i think lowering rh will cause resin production. Don’t know what you mean by flower quality. The probable resin production would be stress induced in this case. Stress that will mess with plant functions. I’m just saying people do that to get more resin and i think it should work (because its a plant response) but that doesn’t necessarily means better flowers.
I think saying rh has nothing to do with flower quality is a little unorthodox and it doesn’t make sense to me. Would love to see a paper on that. I mean plants coexist with the atmosphere and respond to changes.

Already mentioned this but I tested flowers grown in the sweet spot around 65-70% humidity and the same cut grown in 30% humidity (same set up) and they looked identical and smoked identical. Both were lab tested and the %'s came back almost identical. The yield was slightly higher (5%) in the higher humidity but yield is not what I look for when needing med relief.

 

[Rootbound]

This has got to be one of the most civilized discussions I have seen in a long time with tons of great angles.

 

[crimsonecho]

Already mentioned this but I tested flowers grown in the sweet spot around 65-70% humidity and the same cut grown in 30% humidity (same set up) and they looked identical and smoked identical. Both were lab tested and the %'s came back almost identical. The yield was slightly higher (5%) in the higher humidity but yield is not what I look for when needing med relief.

Thats seems to prove my logic that a happy plant is a better plant. Higher humidity should be better for yields at the end which your statement supports. But when you say you’re not after yields i’m not sure what you mean because i don’t think there is anything wrong with a plant that has grown under humid conditions that would make it unsuitable for medicinal use. If you’re talking about mold. You have to check everday and if you have good ventilation and don’t pack plants too closely it shouldn’t be a problem imho. Not been a big problem of mine at least.

 

[Rootbound]

Thats seems to prove my logic that a happy plant is a better plant. Higher humidity should be better for yields at the end which your statement supports. But when you say you’re not after yields i’m not sure what you mean because i don’t think there is anything wrong with a plant that has grown under humid conditions that would make it unsuitable for medicinal use. If you’re talking about mold. You have to check everday and if you have good ventilation and don’t pack plants too closely it shouldn’t be a problem imho. Not been a big problem of mine at least.

Good point, it would cost me more to buy a humidifier and run it, and with a small personal med garden it would take quite a while to recoup my costs as I gift out any leftovers pretty much. So, by not seeing any benefit in flower quality, not chasing the chart is a no brainer for me with not have to worry about Powdery Mildew. Never seen PM in 18 yrs at this spot and plants seem to thrive in it.

 

[crimsonecho]

Good point, it would cost me more to buy a humidifier and run it, and with a small personal med garden it would take quite a while to recoup my costs as I gift out any leftovers pretty much. So, by not seeing any benefit in flower quality, not chasing the chart is a no brainer for me with not have to worry about Powdery Mildew. Never seen PM in 18 yrs at this spot and plants seem to thrive in it.

In your case you have low humidity naturally. When i think about following the chart i don’t have to do anything. Thats the difference i guess. Its your choice to follow or not. Doesnt mean it doesn’t work. I don’t know what is not sitting in its place in this thread but i’m just gonna leave it at this. High humidity doesnt mean you’ll get pm. It means its just easier and you have to keep an eye out. Well i mean truly i don’t care about this vpd thing it just seems like you’re making a trade off, you get less yields (possibly) to decrease the chances of getting pm. Thats ok. Its your call but that doesn’t mean correct kpas doesn’t produce better plants. As you wrote 5% increase in yield. Plus when talking about humidifiers and dehumidifiers again there is the problem of electricity so i’m just going to leave it. It’s a trade off you make but please don’t present it as if it was the only correct way of growing when in fact your own experiment shows keeping humidity higher thus following the chart in a sense has increased yields :)
Also you said good point but havent really eloborated on your first post that insinuates plants grown in humid environments may not be suited for medicinal purposes.

 

[MIMedGrower]

Im going to guess that the humidity is second to slightly higher heat. Which makes plants grow faster and can cause higher yields.

It’s relative humidity. The higher the heat the more water the air can hold.

The problem is at lights out. Excess moisture will come out of its vapor state with the temperature drop.

 

[crimsonecho]

Im going to guess that the humidity is second to slightly higher heat. Which makes plants grow faster and can cause higher yields.

It’s relative humidity. The higher the heat the more water the air can hold.

The problem is at lights out. Excess moisture will come out of its vapor state with the temperature drop.

60 percent rh will not cause dew if you don’t have crazy temp swings. As the research you posted suggests 20f difference in heat doubles the amount of water the air can hold. 20f difference is too high anyway. For an hid grower maybe common (shouldn’t be imo) but not for leds. This is much more of a problem in greenhouses probably not indoors.

 

[3 balls]

Holy Moly! And I was afraid there wouldn't be much interest... So as a 5 year newbie, what I'm taking away from this and what I would tell my 5 years ago self,(Thank God I didn't know of this chart then):

The chart is good information to have, but don't go crazy trying to follow it.
PM sucks but you don't have to pin your de-hue to continuous to control it.
If you want to boost your RH somewhere, you could see growth benefit in veg, but don't over do it dipshit.

Sound reasonable?

 

[3 balls]

Another thing I'm considering which wont make sense if you live in a desert or rain forest; is putting my dehue's on timers to come on only for lights out. I buy the $200 home depot ones to save a $1000. It seems like a cheap easy way to benefit from raised RH without starting a mold factory?

 

[crimsonecho]

Holy Moly! And I was afraid there wouldn't be much interest... So as a 5 year newbie, what I'm taking away from this and what I would tell my 5 years ago self,(Thank God I didn't know of this chart then):

The chart is good information to have, but don't go crazy trying to follow it.
PM sucks but you don't have to pin your de-hue to continuous to control it.
If you want to boost your RH somewhere, you could see growth benefit in veg, but don't over do it dipshit.

Sound reasonable?

Thanks great mediator :)
I’m sure there wouldn’t be much interest if i hadn’t keep poking people with counter arguments hahah. Its all good and fun. Nice to discuss shit thoroughly.

Another thing I'm considering which wont make sense if you live in a desert or rain forest; is putting my dehue's on timers to come on only for lights out. I buy the $200 home depot ones to save a $1000. It seems like a cheap easy way to benefit from raised RH without starting a mold factory?

Once the plant gets acclimated to what rh and temp you’re growing, it’ll be fine growing in that environment from cuts and it seems if you seed a plant and grow it in the same environment the offspring will be more adjusted to your particular climate. So you don’t even need to worry about it. It just contributes to a faster growth and a bit healthier plants is what i’m taking out of this. (Possibly some increase in yield also) (ok let me add maybe an increased risk of pm too, maybe)
But yes that system could work well imo (don’t take it as a fact, its just opinion). Tho again there won’t be enough temp diffs in a controlled environment to cause dew but its a safer bet since the air gets colder rh will rise.

 

[3 balls]

Thanks great mediator :)
I’m sure there wouldn’t be much interest if i hadn’t keep poking people with counter arguments hahah. Its all good and fun. Nice to discuss shit thoroughly.


Once the plant gets acclimated to what rh and temp you’re growing, it’ll be fine growing in that environment from cuts and it seems if you seed a plant and grow it in the same environment the offspring will be more adjusted to your particular climate. So you don’t even need to worry about it. It just contributes to a faster growth and a bit healthier plants is what i’m taking out of this. (Possibly some increase in yield also) (ok let me add maybe an increased risk of pm too, maybe)
But yes that system could work well imo (don’t take it as a fact, its just opinion). Tho again there won’t be enough temp diffs in a controlled environment to cause dew but its a safer bet since the air gets colder rh will rise.

I'm always glad when you get involved, a half ass glossed over conversation doesn't benefit anybody. You poker you.

 

[1diesel1]

I’ve dealt with pm since the day I started growing, the Pacific Northwest breeds pm. No chart no graph no study is going to tell you how to deal with pm on an indoor grow. Once it bites you your bitten and have to deal with the consequences. I’ve found a lot has to do with genetics of a plant when it comes to pm. I’ve been infested at times in the past where I’ve had 4 strains flowering 2 had it real bad 1 mild and one couldn’t touch it. Once pm is introduced to your grow it breeds like wild fire. There’s no stopping it unless your proactive. I use dehumidifiers religiously. When I’m in flower I set it for constant dehumid. In veg recently I’ve kept it around 50%. And I do use the home depot units they’ve treated me rite for many years.