Hey
I have had endless problems with WPM and have tried almost all so called fixes.
What has worked for me is to try to eliminate root cause first otherwise you will constantly battle;
1. Decent extraction
2. Multiple Fans (blowing underneath the canopy as well as above. Don’t worry about wind burn. Crank the fans to max as long as they oscillate
3. Feed in the morning rather than evening
4. Avoid plant leaves touching each other. Prune if you have to
5. Prune bottom ⅓ before flip to flower
6. Invest in a dehumidifier if budget allows
Treatment:
I use 50% Hydrogen Peroxide mixed at a ratio of 60ml to 940ml plain water (1L total volume). This will give you a 3% concentration which is relatively mild.
Wear gloves and a dust mask, switch off the main lights (do 1 hour before lights off, depending on qty of plants), switch off fans but keep extraction going.
Spray each plant, completely top to bottom, literally drench the plant. Take it a bit easier on the buds, but it’s ok if you spray them. Work methodically and don’t miss a spot.When complete, switch fans on max so the plants will be dry before lights come back on (water spots will create burn marks on the leaves)
Repeat above process on day 3 to catch any spots you might have missed. If WPM is still hanging around a few places, repeat again
Although this mix is mild, avoid contact with your skin. If you do get some on your skin, water and soap will fix it.
It will most likely burn the pistils but that’s not really a big deal. I haven’t found that this affects smoke or aroma/taste of the finished product
I found about a 80% improvement the following day after the 1st treatment. Follow up spray is important to try to break the cycle.
Loadshedding always creates a WPM rich environment. No air movement and high RH are perfect for WPM. Try to get some air movement in your grow area while power is off, where possible
Sorry for the long post, but this is by far the best treatment I have experienced to deal with the issue
Bud Wash:
1 x bucket with warm water. Add Hydrogen peroxide at the same ratio as above (60:940)
1 x bucket Lemon Juice & BiCarb
1x bucket cold water
Submerge for a few minuets in each bucket in that order. Rinse off with gentle spray, I use hose with gentle spray, and it will wash away a big amount of WPM.
I swing the branches to remove excess water, then hang straight away
Good luck with the fight man, it’s a major pain in the ass and can ruin your buds, but hopefully this helps