Burning pistols...aaaaah!

Hello guys first time I've ever posted about my grow I got 8 plants in their own room 2 600watt and 1 led light. Recently I have had a powdery mildew problem. (From the supplier of the clones.) I have been spraying them with about 15ml baking soda per 1/2 gal in a larger sprayer. After several weeks of this battle my pistols are rapidly turning brown and shriveling, definitely not Amber, just burnt! Any ideas!? I've thought it was directly related to spraying and heat during flower possibly, maybe the baking soda is killing the pistols? Any help is greatly appreciated

Spraying just about anything tends to advance the browning of pistils. But if you have PM, it is what it is. You have to control it.

So I was planning on using the green cure or a milk spray even though they are indoor plants. Are either of these better or worse for my pistols? Will they bounce back at any point? Any input helps! Thanks!

Green Cure is extremely clean and a great product for use in flower from my experience. The milk is not a good idea for flower and I'm not sure if it works all that well if homogenized, it did nothing for me using homogenized milk when I tried it. I also like spraying with H2O2 water (about a tablespoon of 35% hydrogen peroxide per gallon of water) and using Actinovate. I had very good luck fighting back PM last season rotating through Green Cure, H2O2 and Actinovate, spraying a different one each day and just going to H2O2 the last week. No PM at harvest or during drying

Skim milk works really good due into part the titanuim oxide it contains. Skim milk is not white naturally, the have to dye it white.
But it is too late into flower for milk products or oils.
H2O2 is effective mid to late flower.
Other sprays I don't know anything about since I don't get PM anymore. Not for years.
The real question is ....why does it keep coming back ?
Something in your grow is allowing the PM to continue to thrive.
And why did you buy a clone with PM ? ...no offense intended, just curious.

Regardless I would wash it at harvest, using the H202 bath treatment...then go over to the guy's house you got the clones from and punch him the nuts.
What's wrong with growers nowadays ? Knowingly selling PM clones ? I'd punch him in the nuts myself.

What I would do is...
1. Over the next couple of days gently spray off anything previously sprayed. Take them one by one into shower and spray them gently with hand sprayer with just water, getting as much build up as you can off, put fan on low to blow dry them off. When room is clear, clean with bleach. ( Everything..floor, walls, fans..especially fans. )
( In flowering and especially late flowering even water can turn hairs brown )
2. Check RH and airflow in / out of grow room and through plants ( even if it means thinning them out...leaves , popcorn and even plants...better to toss 2 plants then lose all of them )
Check both day and night temps / RH.
3. Post a pic of the plants and the room itself. ( I should be able to tell why it keeps coming back ) leave everything in it's normal location ( plants. fans etc )
4. Punch that dude in the nuts.

If you have to get chemy , I would try Bugeyes recommendation. ( he seems pretty knowledgeable and a good sort )

I would try and find why the conditions are so great for PM in the first place though.
As I have seen plants with PM do a complete 180 and it never returns due to condition control. Kinda like Herpes ( Just sprayed once with water to clean off spores ....I would never smoke it though )

And I would still punch that dude in the nuts. ( Just think of all that aggravation he is now causing you )

Green cure. Spray 30 mins before lights come on.