HELP! Powdery mildew. Can't stop it.

BurnzyBurnz

BurnzyBurnz

Well-Known Member
- Temperature: 75.2F
- Humidity: 45%
- Promix HP Soil
- pH water @ 6.5
- Nutes: Foxfarm trio
- Intake & outtake fans + Osolating
- Air purifier
- 18/6
- Strain: Bruce Banner
- 3X3X6 tent
- (X2) HLG65 lights

I've been cleaning and cutting off effected leaves daily but have clearly been unsuccessful for weeks now. Can anyone tell me what to do. I've read so much online about milk sprays, apple vinager spray, fish oil, neem oil, etc... Air flow and temps etc... I am pretty sure my tent is where it needs to be in terms of temp & humidity as well as watering at a steady 6.5ph so what can I do ??? I need to fix this ASAP !

Any and all help is GREATLY APPRECIATED !
 
BurnzyBurnz

BurnzyBurnz

Well-Known Member
I don't know why I can't include a picture. Probably cause the world hates me right now. I'm moments before losing my cool.
 
Rurumo

Rurumo

Well-Known Member
All you can do is fight it once you have it and try to keep it managed. I'd get some potassium bicarbonate and hit them with that to start. You might need to use sulfur too. I never use any of the chemical fungicides though, up to you whether you want to go that route. In the future you will need to focus on prevention, it's much easier to prevent than to treat. Treat your plants with biofungicides early and regularly, give them aspirin water a couple of times, spray with neem/silica, etc. Try Regalia if you have the funds, it's a great preventive.
 
BurnzyBurnz

BurnzyBurnz

Well-Known Member
Rurumo said:
All you can do is fight it once you have it and try to keep it managed. I'd get some potassium bicarbonate and hit them with that to start. You might need to use sulfur too. I never use any of the chemical fungicides though, up to you whether you want to go that route. In the future you will need to focus on prevention, it's much easier to prevent than to treat. Treat your plants with biofungicides early and regularly, give them aspirin water a couple of times, spray with neem/silica, etc. Try Regalia if you have the funds, it's a great preventive.
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Thank you i will look into your suggestions. Greatly appreciated.
 
Laughing Grass

Laughing Grass

Well-Known Member
BurnzyBurnz said:
- Temperature: 75.2F
- Humidity: 45%
- Promix HP Soil
- pH water @ 6.5
- Nutes: Foxfarm trio
- Intake & outtake fans + Osolating
- Air purifier
- 18/6
- Strain: Bruce Banner
- 3X3X6 tent
- (X2) HLG65 lights

I've been cleaning and cutting off effected leaves daily but have clearly been unsuccessful for weeks now. Can anyone tell me what to do. I've read so much online about milk sprays, apple vinager spray, fish oil, neem oil, etc... Air flow and temps etc... I am pretty sure my tent is where it needs to be in terms of temp & humidity as well as watering at a steady 6.5ph so what can I do ??? I need to fix this ASAP !

Any and all help is GREATLY APPRECIATED !
Click to expand...
I lost the fight in flower and cut it all down. that shit is cancer.

IMG_0252.jpegIMG_0102 (1).JPG
 
osowhom

osowhom

Well-Known Member
Rurumo said:
All you can do is fight it once you have it and try to keep it managed. I'd get some potassium bicarbonate and hit them with that to start. You might need to use sulfur too. I never use any of the chemical fungicides though, up to you whether you want to go that route. In the future you will need to focus on prevention, it's much easier to prevent than to treat. Treat your plants with biofungicides early and regularly, give them aspirin water a couple of times, spray with neem/silica, etc. Try Regalia if you have the funds, it's a great preventive.
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how much aspirin per gallon?
 
Laughing Grass

Laughing Grass

Well-Known Member
BurnzyBurnz said:
Heart breaking ! Ugh so sad.
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It was better once they were gone. The constant thinking you had it licked onto to have it come back sucked. I cleaned everything like mad with bleach and I'm using regalia once per week now.

I'm sorry you're experiencing this. Good luck.

osowhom said:
how long before you noticed the pm until they looked like this?
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That was about a month after I saw the first signs. When I got deep in the plant is when I discovered how bad the problem was. From the outside everything look fine.

IMG_0221.jpeg
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Beehive

Beehive

Well-Known Member
Your net looks tidy, AF.

I suggest sticking a desk fan on the floor. Circulating air around the buckets and up. Mold happens from dead spots of air.

Box fan hung off the ceiling. Pointing up.
 
Hobbes

Hobbes

Well-Known Member
.

Burnzy I've been fighting PM for 3 grows now and I think I have it licked.

You're still in veg so I'd recommend a surfer vaporization followed by fans under your canopy to increase airflow.

I followed Renfro's advice and bought an AirROS machine that creates hydrogen trioxide which sterilizes everything inside your tent. I still had to add 4 fans below my canopy before the powdery mildew finally went away.

.
 
PJ Diaz

PJ Diaz

Well-Known Member
You definitely need more air movement in your tent, and likely better extraction. You've got spores everywhere now, so a Sulphur burn is likely in order. At least spray your grow area, and plants with a H2O2 dilution to help kill the spores. Start using Silicon with your seed @ around 30ppm, which will harden up the cell walls, and help prevent recurrence.
 
Beehive

Beehive

Well-Known Member
I swear by spraying the space with copper before planting. Plus as much circulation to the point it doesn't hurt the plant. Wind burn is easy to do. It's also easy to go wild with fans.

The best circulation I've found. Is the box fan hung from the ceiling. It makes a world of difference. Tower fan added...
 
Laughing Grass

Laughing Grass

Well-Known Member
Beehive said:
Your net looks tidy, AF.

I suggest sticking a desk fan on the floor. Circulating air around the buckets and up. Mold happens from dead spots of air.

Box fan hung off the ceiling. Pointing up.
Click to expand...
I was using a big 18" wall fan and I definitely had air flow issues and a big dead zone under the fan. Now have a smaller fans running in each corner of the room and a larger oscillating fan that I'll place under the canopy once I start flower.

IMG_0327.JPG
 
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