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GLO already suggested something to use, you could also introduce predatory mites. You aren't alone, thrips are the bane of my existence. I think its FF soil I'm using thou I've noticed tons of little shitty creatures in it when I open it up. I'm thinking about moving to something entirely inert for the next grow.

It's in my flowering tent, humidity around 27%. From what I read powdered mildew is caused by dry warm areas. When I was at the coast, I never had PM, so this is new to me. Plans got a little burn from the peroxide, but nothing major. Leaves seemed to have cleared up and I thought it was gone. I should've climbed in with the loupe sooner. Sent from my CLT-L29 using Tapatalk

PM is almost definitely from humidity - but you should be able to control it with good circulation. could also be from condensation, or spraying your plants just before dark - better to spray just before lights come on like 10mins. I'm coastal, my humidity generally sits at 70%+ When you make your hydrogen peroxide (H2O2) mixture, start with a 35% or 50% concentration - get it from https://gthydro.co.za/products/273-h202-1-liter.html?search_query=hydrogen&results=1 (it must be food grade) using 50% - 60ml h2o2 to 940ml of water will give you 3% solution. anything weaker will just help the PM, anything stronger will burn your plants, again spray in the morning just before lights. your plants could have easily been helped, h2o2 & a bud wash after harvesting. Make sure you clean your grow area thoroughly otherwise it will creep up again, air filters too

I have been cloning the same plant for about 8 years and I have a plant that's been cloned for 15 years no degradation

Same here man. As long as I have consistency and good quality bud, let them do what they want. It can only be good for our economy. Sent from my CLT-L29 using Tapatalk

You got spider mites , look under the leaves you will see tiny little bugs . Use bio pyrol to sort them out

It started about a month ago, all chopped down now. I treated it with a weak peroxide mixture when I first saw it, which seemed to have helped, but it appears it didn't quite kill it. Just culled 13 plants, so starting afresh with the some clones. I was fortunate enough to have taken a few clones before this happened. Sent from my CLT-L29 using Tapatalk