[mushroombrew]

Originally Posted by meizzwang

While that may work, seems like it requires an application of a spray of some sort, be it organic or inorganic. If you up day and night temps and lower humidity, that'll stop powdery mildew from spreading.

Yes change the pH of the leaf with a spray. Thought that was obvious. My bad.

[brown_thumb]

What PH to spray?

[Hold Your Fire]

Originally Posted by brown_thumb

What PH to spray?

Whatever your mixing with water will change the ph on the surface of the leaf to something PM will not grow on.

Whether it's baking soda, peroxide, serenade or cider.

I'm not sure the ph of the water when u start matters.

[toohighmf]

Spray organic milk on the effected areas. If you you use h2o2 and water I suggest using the 3% and diluting that ph’ed water with a 1 to 1 ratio on the heavily acidic side of 2-3.9 PH. If you use h2o2 less diluted, you could burn the shit out of the areas that are sprayed. This is why I suggest organic milk. Also, spray with the lights out to minimize burn. When you’re good and mildew free, spray or actually wipe the leaves with a been oil to keep the leaves waxy to not encourage PM again, and keep the area cooler and dryer.

[brown_thumb]

Originally Posted by Hold Your Fire

Whatever your mixing with water will change the ph on the surface of the leaf to something PM will not grow on.

Whether it's baking soda, peroxide, serenade or cider.

I'm not sure the ph of the water when u start matters.

You're stating that the PH can be high or low to kill PM? How much either way from PH 7.0?

[Hold Your Fire]

Originally Posted by brown_thumb

You're stating that the PH can be high or low to kill PM? How much either way from PH 7.0?

I do not know the actual number.