Hand held UV light as a preventitive to mold?

[Merlin1147]

Oh I see sorry, how would this play in a synthetic system though?. That aside I suppose these products build up natural immunity's to such disease?.

Also I understand that anything UV is harsh, but it is ofc part of the sun and life evolotion. If a safe level for humans/plants can be used that isn't safe for mold spores I would also put this in the catigory of organic and safe.

UVC light is completely filtered out by the atmosphere. None from the sun reaches the earths surface.

 

[Flowki]

UVC light is completely filtered out by the atmosphere. None from the sun reaches the earths surface.

Oh you're right, sorry, I must have miss read the ''mostly'' part. In that case it's not worth the risk just as a prevention method, thank you, that was a really important correction.

Shame I can't update the OP to correct that as a stupid mislead.

 

[Metro_Detroit]

A res with zero microbial activity.
Usually achieved by using a chlorine product similar to pool shock.

I’ve seen people also use hydrogen peroxide in like 35% quality doses like h2o2o I think it’s called. Any experience with sterilizing like that?

 

[Keesje]

.I've been having some trouble with powdery mildew and as part of my regime to conquer it I came across a hand held UVC light by a company in the NL called CleanLight.

I researched it as I could with a new product and ordered one the same day, it should be in by FedEx tomorrow.

I'll post in here what effects if any I notice. I've got a couple of bud samples with PM and I'm going to do an eyeball of before UVC light and after.

Next week I should have a usb microscope and I'll post some pics.

I am really curious about the results of this device.
The use of UV-C for preventing diseases is still controversial.
There are - as I know - no scientific papers that state that it works.
But perhaps it does in some circumstances.
Keep us posted!

 

[Hobbes]

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The problem that I've been having with the CleanLight is there's no visual change in the powdery mildew before and after hitting it with UVC.

Not saying there's nothing happening, just no visual evidence.

I guess that the telling will come in weeks and months if I get more PM or not.

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[Keesje]

It is only 4 or 5 days, right?
Perhaps a little early to see any difference.

So you see any bleaching of the leaves?

 

[Hobbes]

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No bleaching of the leaves at all.

I gave a cured harvest a once over with the light and I didn't notice anything right away with the trichomes changing color.

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[nunyabidness420]

Not sure if running a handheld over the plants every couple of days is enough.
I ran 20mw of UVC in a 2x2ft space for about an hour a day.
If you over expose the plant it will look like this.


If you see that on the top most leaves, just dial back the exposure.

 

[Kassiopeija]

UVC is good to sterilize the air and thus, can take out spores before they hit the plants but if pathogens already made it into the interior of thick colas there's nothing an UVC lamp is gonna do to help it.

 

[Keesje]

UVC is good to sterilize the air and thus, can take out spores before they hit the plants but if pathogens already made it into the interior of thick colas there's nothing an UVC lamp is gonna do to help it.

But first it will hit the leaves.
What is the moment that it will not work anymore?

 

[Kassiopeija]

What is the moment that it will not work anymore?

once the pathogens enter the stems/stalks in a cola. From that point onward you need something systemically

 

[Twohi4h]

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Skin cancer is the worst part, blindness.

Have to wear googles and gloves, and I'm going to wear a long sleeved shirt when I use it.

Flowki this is exactly what you were talking about in post 1, I thought you'd be a little more stoked!



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Hey dude. Any update on that clean light.. I just bought one and I have been using it on my plants everyday. hoping to keep this PM at bay. hoping it will stop the spread.

 

[Hobbes]

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Twohi4h I bought and AirROS machine (sterilize plant surfaces) and stopped using the CleanLight.

I still got a slight bout of powdery mildew last harvest, using the AirROS, maybe should have kept using the CleanLight.

Good luck, PM is a heartbreaker.

Do you have any pictures of the outbreak?

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[Twohi4h]

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Twohi4h I bought and AirROS machine (sterilize plant surfaces) and stopped using the CleanLight.

I still got a slight bout of powdery mildew last harvest, using the AirROS, maybe should have kept using the CleanLight.

Good luck, PM is a heartbreaker.

Do you have any pictures of the outbreak?

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I will remember to take one. I'm in week 5 flower! At the moment it is just on mostly bigger fan leaves. I keep picking them off. I'm now waving that thing over the plants every morning hoping it will kill spores so they don't progress any further. My vortex fan died that was used to scrub the air. Since I'm in a sealed room I would a assume the lack of scrubbing paired with some high humidity days/night must be where the PM came from. First time with it.

 

[Hobbes]

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Might be the time of year, I saw a lot of powdery mildew threads in September/October.

I picked up a product called Dr Zymes' Eliminator that digests the PM and spores. I used it to kill an outbreak in veg and my brother used it to fight back an outbreak in flower. Much better off spraying leaves with PM than wiping them off and spreading spores. Safe to use late in flower, made of food safe ingredients. Pretty cheap.

Good luck, I spent $5,200 cdn on the AirROS and I'm still not sure to be rid of PM.

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[Chunky Stool]

Good airflow is usually enough to prevent PM, even when it's humid.

A common mistake is to let leaves overlap, which traps moisture and blocks airflow -- a perfect environment for PM to start.

Also, healthy plants are more resistant to PM (and pests).
Seedlings that develop deficiencies can easily become stunted & vulnerable so it's important to give them a good start.

 

[Twohi4h]

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Might be the time of year, I saw a lot of powdery mildew threads in September/October.

I picked up a product called Dr Zymes' Eliminator that digests the PM and spores. I used it to kill an outbreak in veg and my brother used it to fight back an outbreak in flower. Much better off spraying leaves with PM than wiping them off and spreading spores. Safe to use late in flower, made of food safe ingredients. Pretty cheap.

Good luck, I spent $5,200 cdn on the AirROS and I'm still not sure to be rid of PM.

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so I just hit week 5 flower... Dr. Zymes safe to spray? won't it leave a residue or something? I like the sounds of something eating the fungi

 

[Hobbes]

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Dr Zymes told me that I could use Eliminator as a post harvest bath the way some people use H2O2.

Made with food safe products.

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