Anyone ever use a CleanLight UV to treat white powder mildew?

Has anyone ever tried using a UV light to treat white powder mildew? I am on day 21 of flowering and have tried 3 different methods, none have worked so far, I have used:

- Green Earth Garden Sulfur
- Defender
- Hydrogen Peroxide/water mix

The WPM is still in its early stages and on the lower branches with the rare flare up on a higher branch/leaf

I have a ton of air movement on the canopy as well as on the ground, my RH generally sits between 50-55

I was watching a video with George Servantes and he has a mention of this product: http://www.valleyindoor.com/product.php?productid=1300&cat=&page=1

I would like to know if anyone here has tried this method and had any success, rather than just having George promote a product and say that it works

As well, am I to far into the flower stage to try a sulphur burner?

Thanks everyone!

I know that these devices are used in hospitals all the time. My only concern is that it is probably using UVA and that might be destructive to the plant tissue if used too much.

Maybe try dropping your RH to low 40s. Or try a neem oil/dish soap mix.

Anyone actually tried it?

VanIsl said:

Anyone actually tried it?

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yes. blacklights do a fair job of protecting against spores, but very little against an active infestation. the amount of UV radiation you would need to cook off a rampant PM infestation is dangerous to you, and deadly to your plants.
i install one in any place i keep young plants or germinating seeds. a single 24 watt 2 foot t8 florescent tube works great and prevents mildew from gaining a foothold all around the area.

and if you asre seeing PM on the leafs, you have an active infestation. lower your humidity raise the temps to ~80 degrees F, if possible,

my RH is sitting around 43 and my room temp is already at 80 and has been for a while now. I come in and remove all visible PM I can see and within 24-36 hours it seems to be back again, I have 4 weeks left of flowering and am hoping I can contain it enough to still have a good harvest. I have a UV light coming in the mail and I will see how well it works, worth a try anyways

My name is Arne Aiking of CleanLight in the Netherlands. I can assure your readers that literally thousands of growers are using the CleanLight technology to reduce or eliminate their dependency of sulfur and chemical pesticides. Especially during flowering. Safe for people and for plants.
On YouTube you can see how it works in practise: