Powdery mildew??? Please help identify!

So what cuts are you looking for? Anything special?
Well I want the WiFi #3 but won't be going with the nursery I got it from in Oakland. I'm actually not sure what pheno is the "White fire" I have, when I got it at the club the name on in was simply "white fire". But I guess don't matter now that it has dang pm. Anyways, WiFi #3 is what I really want to get my hands on and AC/DC. I believe MF carries AC/DC.
 
I currently have the DHN "the white" and chocolate hashberry which is also from DHN, Strawberry Cough from SK, blueberry from MF, WiFi alien from Grass Roots and the PM ridden "white fire" from a different nursery. But I may just toss them all and start fresh if I can't fix the PM problem soon.
 
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GuyLeDuche

Well-Known Member
Is that hydrogen peroxide? I know I said I don't want to use harsh chems, but do you think eagle would work to drench the grow box?
I use 1-2 teaspoons of bleach to a gallon of water to clean my grow space, it seems to do the job. I would say for the ones you have that aren't showing signs you should consider a foliar spray at lights on of neem oil and silicate, with a final ph over 7.0. Pm doesn't like to grow on high ph surfaces, IMO the only reason 90% of the home brew stuff works for anyone, they are just using stuff that bumps ph up for a few days. The neem/silicate should help the sick one, but only for a few days to a week IME. I would probably pluck the worst leaves then drench it in the foliar, give it a good shake to wash it off, then wait a few minutes and spray again to coat the leaves and stem. Just make sure if you spray anything your circulation is good enough to dry everything out within 20-30mins, don't want to add to your woes.
Of course a real issue is the low temp/high humidity I assume you have at lights off, that was what my problem was at least. I've heard it said pm can't thrive at higher temps (80-85f), but I know I couldn't keep my bedroom that hot at night lol. I would try to keep it over 70f though if you can, and a dehumidifier is a must IMO if rh is consistently over 50%, mine is 75%+ at night without one. Whatever you do don't go cheap and get the little $40 "closet" model widely available on ebay, total garbage. It will only pull an ounce or two a day at 60-80%rh, my 150pint will pull 1.5 gallons most days, great source of clean water ;)

Good luck bud, I hope you don't need a full reset, but don't kill yourself for months fighting it like I did...I became convinced the only thing that really works is poison like eagle20, and it's pretty expensive tbh. About the same money at a seedbank made more sense to me, I was sick of losing ground.
 
I use 1-2 teaspoons of bleach to a gallon of water to clean my grow space, it seems to do the job. I would say for the ones you have that aren't showing signs you should consider a foliar spray at lights on of neem oil and silicate, with a final ph over 7.0. Pm doesn't like to grow on high ph surfaces, IMO the only reason 90% of the home brew stuff works for anyone, they are just using stuff that bumps ph up for a few days. The neem/silicate should help the sick one, but only for a few days to a week IME. I would probably pluck the worst leaves then drench it in the foliar, give it a good shake to wash it off, then wait a few minutes and spray again to coat the leaves and stem. Just make sure if you spray anything your circulation is good enough to dry everything out within 20-30mins, don't want to add to your woes.
Of course a real issue is the low temp/high humidity I assume you have at lights off, that was what my problem was at least. I've heard it said pm can't thrive at higher temps (80-85f), but I know I couldn't keep my bedroom that hot at night lol. I would try to keep it over 70f though if you can, and a dehumidifier is a must IMO if rh is consistently over 50%, mine is 75%+ at night without one. Whatever you do don't go cheap and get the little $40 "closet" model widely available on ebay, total garbage. It will only pull an ounce or two a day at 60-80%rh, my 150pint will pull 1.5 gallons most days, great source of clean water ;)

Good luck bud, I hope you don't need a full reset, but don't kill yourself for months fighting it like I did...I became convinced the only thing that really works is poison like eagle20, and it's pretty expensive tbh. About the same money at a seedbank made more sense to me, I was sick of losing ground.
that pm was in those clones when u bought I bet the seller new it to scum bags
If it is pm yea most likely they knew. But on another thread they are telling me it looks like its nercosis and not mold?
 
I use 1-2 teaspoons of bleach to a gallon of water to clean my grow space, it seems to do the job. I would say for the ones you have that aren't showing signs you should consider a foliar spray at lights on of neem oil and silicate, with a final ph over 7.0. Pm doesn't like to grow on high ph surfaces, IMO the only reason 90% of the home brew stuff works for anyone, they are just using stuff that bumps ph up for a few days. The neem/silicate should help the sick one, but only for a few days to a week IME. I would probably pluck the worst leaves then drench it in the foliar, give it a good shake to wash it off, then wait a few minutes and spray again to coat the leaves and stem. Just make sure if you spray anything your circulation is good enough to dry everything out within 20-30mins, don't want to add to your woes.
Of course a real issue is the low temp/high humidity I assume you have at lights off, that was what my problem was at least. I've heard it said pm can't thrive at higher temps (80-85f), but I know I couldn't keep my bedroom that hot at night lol. I would try to keep it over 70f though if you can, and a dehumidifier is a must IMO if rh is consistently over 50%, mine is 75%+ at night without one. Whatever you do don't go cheap and get the little $40 "closet" model widely available on ebay, total garbage. It will only pull an ounce or two a day at 60-80%rh, my 150pint will pull 1.5 gallons most days, great source of clean water ;)

Good luck bud, I hope you don't need a full reset, but don't kill yourself for months fighting it like I did...I became convinced the only thing that really works is poison like eagle20, and it's pretty expensive tbh. About the same money at a seedbank made more sense to me, I was sick of losing ground.
Thank you very much for the great info and knowledge guyleduche I greatly appreciate it brother. Either way I will spray all the ladies and the three that seem to have the problem I already quarantined will clip damaged leafs and monitor. Funny thing is that the three that seem to be the only ones infected so far are the same strain and from the same nursery. I only have those three of that strain so it may be something else like the guys at the other forums were saying.

Anyways, thank you gentlemen I really appreciate your help. Jah bless brothers.
 

thumper60

Well-Known Member
Thank you very much for the great info and knowledge guyleduche I greatly appreciate it brother. Either way I will spray all the ladies and the three that seem to have the problem I already quarantined will clip damaged leafs and monitor. Funny thing is that the three that seem to be the only ones infected so far are the same strain and from the same nursery. I only have those three of that strain so it may be something else like the guys at the other forums were saying.

Anyways, thank you gentlemen I really appreciate your help. Jah bless brothers.
best thing to do get seeds make u own clones don't bother with scum bags
 

GuyLeDuche

Well-Known Member
If it is pm yea most likely they knew. But on another thread they are telling me it looks like its nercosis and not mold?

Yea, I'm not 100% sure either. Some of the pics have the fuzzy hairs I saw with a loupe but I never got the dark dead looking spots, I would have bluish-white spots on the leaves and on the veins in veg, and in flower the lower leaves on the bottom of buds would get white spots. I wonder if there is necrosis, and that is creating a condition the pm likes? IDK, it does look like something different is going on, but IMO there does seem to be some kind of mold/mildew as well.
 
Yea, I'm not 100% sure either. Some of the pics have the fuzzy hairs I saw with a loupe but I never got the dark dead looking spots, I would have bluish-white spots on the leaves and on the veins in veg, and in flower the lower leaves on the bottom of buds would get white spots. I wonder if there is necrosis, and that is creating a condition the pm likes? IDK, it does look like something different is going on, but IMO there does seem to be some kind of mold/mildew as well.
Yea see the thing is that before the mildew issue came up my plants suffered deficiencies because I had them in FF happy frog and thought it was ok to just give them plain R.O water for a couple weeks, so the deficiency caused damage to leaves and after I added nutes the mold/mildew question came up.
 
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