UV Ultra Violet Lights:
Sterilization by UV Light (Ultraviolet radiation) has been practiced in medicine since the 1800's, with successful application to air and water purification for agriculture iof both UV-C and UV-B. Because Powdery Mildew fungus is transparent and has no pigment for protection against UV light, Ultra Violet radiation can easily penetrate cell walls and damage their DNA, killing them directly or rendering them unable to perform essential life processes including replication.
Because powdery mildew and other infections such as fungal spores spread easily via airflow and ventilation, UV air-filters can be an extremely helpful tool to prevent the spread of these diseases. UV light (in limited exposure) via a handheld light can also be directed at plant surfaces and leaves in order to deactivate/kill Powdery Mildew, fungus and bacteria already present or forming in the grow room. Use care and limit exposure time with UV lights because overexposure can be harmful for your plants too! Use UV lights specially made to treat powdery mildew and molds because they are made at an intensity that is tested to kill powdery mildew with minimal harm to your plants when used as directed.
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