Is This Crystal Or Powdery Mildew?

CustomHydro

CustomHydro

Well-Known Member
fdd2blk said:
i use straight peroxide. i just pour the whole bottle in a spray bottle. but like i said it burns so maybe start out 50/50. i only spray the areas where i see the mildew. i try to only spray the mildew itself.
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Their are two different concentrates that vary a lot in. The stuff fdd is talking about is pharmacy grade, which is 3% H2O2.
The horticultural H2O2 is 35%. So if u get your stuff from a grow shop, u want to dilute it 1 part H2O2 to 12 parts H2O otherwise you will torch those plants...
I got a drop of that shit on my finger once and I only wiped it off (I should have rinsed it) my finger was burning bad for an hour+:fire::bigjoint:.
 
F

fdd2blk

Well-Known Member
CustomHydro said:
Their are two different concentrates that vary a lot in. The stuff fdd is talking about is pharmacy grade, which is 3% H2O2.
The horticultural H2O2 is 35%. So if u get your stuff from a grow shop, u want to dilute it 1 part H2O2 to 12 parts H2O otherwise you will torch those plants...
I got a drop of that shit on my finger once and I only wiped it off (I should have rinsed it) my finger was burning bad for an hour+:fire::bigjoint:.
Click to expand...

good point. i've never even messed with that stuff. :bigjoint:
 
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bushdeepinkush

Active Member
i just battled powdery mildew myself, i do have a dehumidifier so i just have left it on to drop the levels below 20% which has really helped. since im over a month into flower i blew some sulfur powder on the outerplants which were developing the mildew. so far everything appears back to normal and we're growing as always.
 
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