Just want to mention - again - UV-C treatments has proved to be far better than any fungicide to prevent mildew from spreading in the Danish professional greenhouse industry.
Does having the exhaust running 24/7 witha hepa filter on the intake reduce the chance of mildew?
Best way to cure powdery mildew is a combination of everything already mentioned.
Thats it ! it is simple as long as you do all this. remeber to take a 24 hour break between steps 3 and 4. After doing step 4 you will notice milk dry milk stains on your leafs that is fine let it sit there it will flake away.
- RH% 40-50
- Temps 75F-80F
- Now you have to kill the visible Mildew. Apply any antifungicide you are willing to buy and spray on your plants. Omri product during flowering and what ever you like during veg. Do during lights off
- Now it is time to addBeneficial bacteria make a mixture of milk and water (butter milk works best) 1 part milk to 2 part water is fine 1 part milk and 10 part water is fine but you will likely have to spary with this mixture a few times. Do during lights off
ive noticed everything says RH between 40 and 50. i have small closet grow and recently included a dehumidifier to battle the PM. ive been running it constantly to keep the humidity as low as possible, which is usually between 20 nad 30 percent. does having my humidity this low allow more PM than at between 40 and 50? im willing to sacrifice some bud growth due to low humidity in order to eliminate the pm problems. im just hoping im not making the PM worse by having the RH on the very low end.... any thoughts are very much appreciated
i dont know if it was mentioned here before, but grapeman is right and chimera is also right.
as i know there two specific kinds of pm which harms cannabis.
we call it "echter mehltau" and "falscher mehltau" dont know in english but its like "real pm" and "fake pm"
the deal is real pm is growing downside your leafes and it is in the plant its an infection like humans get virus or bacterial infection, and if you want to cure your plant you have to use chemics which were uptake from the plant and working inside to fight the fungus.
if not it will ever be present in any clone or what else again.
other side is what you mentioned its the fake pm which grows on upside of leafes. its like having a banana laying around thousends of spores are ever present theres no way to get rid of them, only in an area which we cant afford just for growing cannabis
air circulation not to big temperature changes (day/night) and a low humidity with a clean setup should do the job.
maybe this was said before i dont read it all but i thought its good to say i also got some pictures of "real" and "fake" pm i ll post them when i find them.