Powdery mildew

[ilv911]

So.. last days because of work I couldn't empty my dehumidifiers in time . Found humidity up to 65 % . Today when I entered my grow room one of my girls had a single leaf (upper one) covered about 10% with something like sugar, i bet its PΜ . Removed the fan leaf and sprayed with a mix of water and milk 1:1 ratio. Should i go harder on it ?

Week 4 in flower

 

[user 60570]

keep the humidity down and keep an eyeball on them….and fans , more fans

if it comes back , spray more

i have never used the water milk method , does it work good?

but I have used Oxidate and it works really well

 

[boo]

if in veg use potassium bicarbonate to kill it...

 

[user 60570]

if in veg use potassium bicarbonate to kill it...

week 4 in flower

 

[ilv911]

keep the humidity down and keep an eyeball on them….and fans , more fans

if it comes back , spray more

i have never used the water milk method , does it work good?

but I have used Oxidate and it works really well

Milk is the best diy thing vs fungus for sure especially when light hits milk . More fans ok sir !

 

[boo]

I'd still try it and be sure to rinse thoroughly...it's food grade and isn't toxic so yeah, its worth a try...

 

[ilv911]

keep the humidity down and keep an eyeball on them….and fans , more fans

if it comes back , spray more

i have never used the water milk method , does it work good?

but I have used Oxidate and it works really well

Could you tell me please about oxidate? Trying to find it here in greece but no results. Got a picture or something?
Edit: cant find oxidate in my country . Only thing that we've got is itraconazole but i dont know if its poisonous..

 

[user 60570]

Could you tell me please about oxidate? Trying to find it here in greece but no results. Got a picture or something?
Edit: cant find oxidate in my country . Only thing that we've got is itraconazole but i dont know if its poisonous..

give these people a phone call or an email and see if they will ship,some to you or tell you where to buy it in the EU



https://biosafesystems.com/product/oxidate-2/

 

[boo]

oxidate is essentially hydrogen peroxide but at a concentration of 57% or so...look into zerotol as well, both from the same folks...

 

[Lesso]

Oxidate. In a 4 gal container of water to 150ml oxidate

 

[Hippie420]

You can find 35% H2O2 at a lot of pool/hot tub supply stores. It's where I bought my last two gallons.

 

[ilv911]

You can find 35% H2O2 at a lot of pool/hot tub supply stores. It's where I bought my last two gallons.

Found it hippie thanks! Do i have to mix it with water ? all i can read is thst you can use it to clean things and wounds too

 

[RosterMan]

if in veg use potassium bicarbonate to kill it...

All I use right up to last 2 weeks, I dont drench the flowers at very end just leaves

 

[RosterMan]

Found it hippie thanks! Do i have to mix it with water ? all i can read is thst you can use it to clean things and wounds too

Be careful with that

 

[Hippie420]

Be careful with that

Yep. Use eye protection. In that concentration, it is a acid and can frost your corneas.

 

[ilv911]

Yep. Use eye protection. In that concentration, it is a acid and can frost your corneas.

Do i add water to spray my plants ?

 

[Lesso]

Do i add water to spray my plants ?

Yes. I'd say start at 50 water to 1 h2o2

 

[Lesso]

Yep. Use eye protection. In that concentration, it is a acid and can frost your corneas.

Gloves and sleeves as well

 

[Hippie420]

Yes. I'd say start at 50 water to 1 h2o2

I think the ratio is a bit too much. 50/50 or one to one would take you down to a little over 17%. I'd start with that and watch the results. If it doesn't kill the mold, try straight 35% on a select spot.

 

[boo]

From personal experience 17% will destroy the plants and cause everything to wilt. It needs to be reduced way far down from that number, at least in my life that’s what I found.