Do leaves enjoy cool mist or am I saturating them?

T

testtime

Well-Known Member
I am 2 weeks past clone transplant with some very nice growth.

I have an ultrasonic humidifier that is designed for a reptile tank. It's got two large tubes coming out so I can direct where the mist goes. I'm in Denver so I have to run this otherwise I'd be at 30% humidity. Right now I'm lucky to hit a consistent 50% before the tent needs to be exhausted then we start again. I've looped the tubes over and dropped them over a couple of plants.

That means a couple of the leaves actually get condensed moisture while the rest of the leaves are bathed in the high moisture air.

The fan is on and off and on timer where it will circulate the air for about a minute and then pause for 30 seconds for rest. That gives the humidifier time to bathe the plant and then it gets blown off.

Is this good, bad, or indifferent?
 
Wastei

Wastei

Well-Known Member
Put a fan blowing from the bottom up at a 45° angle right under pointing at the humidifier. That's what I've always done to actively combat this. The humidifiers also get way more efficient because less is lost at contact (ie walls, flooring, leaves etc.) I have mine outside of the tents in the "temperate room".

Most common is a room within a room when you grow Cannabis. It easier to regulate what's going in instead of having a humidifier in every tent/room. That's at least what I normally do.
 
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twentyeight.threefive

twentyeight.threefive

Well-Known Member
testtime said:
I am 2 weeks past clone transplant with some very nice growth.

I have an ultrasonic humidifier that is designed for a reptile tank. It's got two large tubes coming out so I can direct where the mist goes. I'm in Denver so I have to run this otherwise I'd be at 30% humidity. Right now I'm lucky to hit a consistent 50% before the tent needs to be exhausted then we start again. I've looped the tubes over and dropped them over a couple of plants.

That means a couple of the leaves actually get condensed moisture while the rest of the leaves are bathed in the high moisture air.

The fan is on and off and on timer where it will circulate the air for about a minute and then pause for 30 seconds for rest. That gives the humidifier time to bathe the plant and then it gets blown off.

Is this good, bad, or indifferent?
Click to expand...
Constantly wet leaves isn't healthy. I've only grown from seed and my leaves are never wet. I don't spray them or let moisture settle on them. Even when they transpire the airflow in the tent generally keeps them dry.
 
T

testtime

Well-Known Member
twentyeight.threefive said:
Constantly wet leaves isn't healthy. I've only grown from seed and my leaves are never wet. I don't spray them or let moisture settle on them. Even when they transpire the airflow in the tent generally keeps them dry.
Click to expand...

I understand that. That's why I pointed out that a couple of leaves get wet (via condensation) and then it blows off almost immediately and the remainder leaves just get the cool mist. It's not constant because it goes on for 30 seconds and then gets blown off.

Here let me see if I can get some pictures...

Ahh, the files aren't uploading. Worked two days ago dammit. Oh well, no files. Bottom line is they are not getting drenched, they are getting cool mist, and the cool mist is not continuous, they also get lots and lots of wind.
 
T

testtime

Well-Known Member
Wastei said:
Put a fan blowing from the bottom up at a 45° angle right under pointing at the humidifier. That's what I've always done to actively combat this. The humidifiers also get way more efficient because less is lost at contact (ie walls, flooring, leaves etc.) I have mine outside of the tents in the "temperate room".

Most common is a room within a room when you grow Cannabis. It easier to regulate what's going in instead of having a humidifier in every tent/room. That's at least what I normally do.
Click to expand...

I'm not looking to combat anything, or at least I don't think so. I can direct the mist anywhere I want via the tubes. I can drop it from the ceiling or I can pop it under the lights or I could have it spray back and forth by attaching it to the fan.

I don't have the option of room within room at this point. I must suffer Colorado atmosphere. It's well worth it.
 
A

A.k.a

Well-Known Member
This is an issue with some mushroom species too. What some people have done is pumped the mist into a sealed tub which acts as a sort of expansion/mixture chamber and is then vented into a tent as premixed moist air.
 
twentyeight.threefive

twentyeight.threefive

Well-Known Member
testtime said:
I understand that. That's why I pointed out that a couple of leaves get wet (via condensation) and then it blows off almost immediately and the remainder leaves just get the cool mist. It's not constant because it goes on for 30 seconds and then gets blown off.

Here let me see if I can get some pictures...

Ahh, the files aren't uploading. Worked two days ago dammit. Oh well, no files. Bottom line is they are not getting drenched, they are getting cool mist, and the cool mist is not continuous, they also get lots and lots of wind.
Click to expand...
Don't let any get on the leaves. When the plant need water, then water the roots. Otherwise keep the mist away from the plants.
 
T

testtime

Well-Known Member
A.k.a said:
This is an issue with some mushroom species too. What some people have done is pumped the mist into a sealed tub which acts as a sort of expansion/mixture chamber and is then vented into a tent as premixed moist air.
Click to expand...
Yeah I've done that. Actually I'm probably one of the few people in this board who can talk about growing illegal mushrooms without worrying about being arrested because I was already arrested for it and served my debt to society. I'm not growing them now and I'm being perfectly legal so it is a very odd position to be in.

I can't follow the room within the room advice. I've got a 4x4 tent and the only available spot in the house and it's a large room that I can't possibly create the perfect feeder environment. My general environment of the room is about 72° but that's going to raise in a month or two in the summer. When I go for an air exchange it is about 2 minutes of sucking in and replacing with dry 72° air. If I attempt to put some type of humidity box before this point it would get exhausted in about 2 seconds so a much better off having the humidifier pipes pump the moisture directly into the chamber whenever possible.

So to start off with an order to increase the humidity as fast as possible I'm going to add a couple more humidifiers.

I'm pretty sure I'm simply going to just have a rolling air conditioner pump cold air directly in which will reduce my air exchange requirements to zero. That will have to wait.

When I grew mushrooms temperature was never ever ever the issue. When you don't have hot lights and do have a rolling air conditioner in a walk-in closet you can control exactly. So my air flow was 100% determined by what I wanted to go through and get to the perfect humidity level.

Previous times when I grew weed I had HPS and metal halide and ceramic metal halide in enclosed hoods that I always had air flow coming through. Now I have LEDs inside the tent with no concept of dedicated airflow sucking air across from the LEDs.

The LEDs are pulling 380 watts from the wall. They consist of two units with a total of four bars across. They are from Enjoyield. Since they were about 93 bucks a piece they cost a ridiculously low amount per watt. I'm just hoping they last.

I expect to add two more for flowering.

Yep, rolling air conditioner is the way to go.
 
T

testtime

Well-Known Member
twentyeight.threefive said:
Constantly wet leaves isn't healthy. I've only grown from seed and my leaves are never wet. I don't spray them or let moisture settle on them. Even when they transpire the airflow in the tent generally keeps them dry.
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I understand there are times that wet leaves are bad. Simply bad. The primary time would be when a high intensity discharge light gets focused through a droplet of water and sears a hole in the leaf because it's a magnifier glass at that moment.

Other times would be when excess moisture would give an environment for some type of fungus or mold spore to take hold of. Excess includes too much humidity which means the plant can't transpire correctly. But remember I'm trying to fight dry all the time. "Excess" is a judgment call depending on the plant and the environment. That's why I like to have fans blow hard against plants in cycles all the time. Everything evaporates sooner or later (I hope). In this case it's usually in under 30 seconds.

But other than that why do people consider wet leaves a bad thing? They are plants. They've evolved for billions of years to love the rain.

And I'm talking vegetation mode only. The second the switch flips the attitude changes dramatically. Protect those buds.

Can you tell me please?
 
twentyeight.threefive

twentyeight.threefive

Well-Known Member
testtime said:
I understand there are times that wet leaves are bad. Simply bad. The primary time would be when a high intensity discharge light gets focused through a droplet of water and sears a hole in the leaf because it's a magnifier glass at that moment.

Other times would be when excess moisture would give an environment for some type of fungus or mold spore to take hold of. Excess includes too much humidity which means the plant can't transpire correctly. But remember I'm trying to fight dry all the time. "Excess" is a judgment call depending on the plant and the environment. That's why I like to have fans blow hard against plants in cycles all the time. Everything evaporates sooner or later (I hope). In this case it's usually in under 30 seconds.

But other than that why do people consider wet leaves a bad thing? They are plants. They've evolved for billions of years to love the rain.

And I'm talking vegetation mode only. The second the switch flips the attitude changes dramatically. Protect those buds.

Can you tell me please?
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You know what. You're completely right. Keep misting your plants. Good luck.
 
Wastei

Wastei

Well-Known Member
Severed Tongue said:
You've never experienced nature before? Look at the wet leaves... OMG the horror!
View attachment 4897076
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testtime said:
I understand there are times that wet leaves are bad. Simply bad. The primary time would be when a high intensity discharge light gets focused through a droplet of water and sears a hole in the leaf because it's a magnifier glass at that moment.

Other times would be when excess moisture would give an environment for some type of fungus or mold spore to take hold of.
Click to expand...
You kind of answered your own question. The first in bold has since long been debunked. You talk nature and rain but believe leaves get burnt by water droplets in the sun? Doesn't work that way in nature. I mostly foliar feed with light on, that's 1k of HID. No burns what so ever.

No reason to foliar with just water. The only thing it does is creating an environment for WPM to flourish. Only positive is it raises humidity for maybe half an hour. That's about it.
 
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T

testtime

Well-Known Member
Wastei said:
You kind of answered your own question. The first in bold has since long been debunked. You talk nature and rain but believe leaves get burnt by water droplets in the sun? Doesn't work that way in nature. I mostly foliar feed with light on, that's 1k of HID. No burns what so ever.

No reason to foliar with just water. The only thing it does is creating an environment for WPM to flourish. Only positive is it raises humidity for maybe half an hour. That's about it.
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Googling WPM (not words per minute) gave me incentive to act.

Okay thank you very much. I removed the tubes and let the humidifier spray straight up. What I didn't realize before was the tubes caused a tremendous amount of condensation within them and stole vapor from me. Once they were off the vapor shot up then fell back right next down to the fan which then essentially distributed throughout. Without the tubes constricting and condensing my humidity went from 35% to 60% in about a minute. My warm-up time between exhausting the tent is around 10 to 15 minutes. So that gives me a good hang time before it exhausts and I have to run the vaporizer again.

I have attached pictures so you can see my short squat many tight noded little baby.

The one behind had nutrient lockout but it's looking much better than it did a couple days ago.

Thanks for your input.

PXL_20210508_211754463.jpg
 
twentyeight.threefive

twentyeight.threefive

Well-Known Member
testtime said:
Googling WPM (not words per minute) gave me incentive to act.

Okay thank you very much. I removed the tubes and let the humidifier spray straight up. What I didn't realize before was the tubes caused a tremendous amount of condensation within them and stole vapor from me. Once they were off the vapor shot up then fell back right next down to the fan which then essentially distributed throughout. Without the tubes constricting and condensing my humidity went from 35% to 60% in about a minute. My warm-up time between exhausting the tent is around 10 to 15 minutes. So that gives me a good hang time before it exhausts and I have to run the vaporizer again.

I have attached pictures so you can see my short squat many tight noded little baby.

The one behind had nutrient lockout but it's looking much better than it did a couple days ago.

Thanks for your input.

View attachment 4897249
Click to expand...
Glad Google and not experienced advice made you act. Well done. Google how to fill your pots to the top for next grow too.
 
Jjgrow420

Jjgrow420

Well-Known Member
lol. this thread is funny
its a plant not a lizard. dont shoot mist on ur plants constantly thats a bad idea youre gona get mold sooner or later.
ever see a something that gets wet constantly? it turns into a fuzzy pile of mold.
good luck with your terrarium
 
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