Physan 20 is a broad-spectrum, EPA-approved disinfectant, fungicide, virucide, and algaecide used to control pathogens on plants, in greenhouses, and on hard surfaces. It is highly effective for treating fungal diseases, algae, and bacteria, particularly for orchids, seedlings, and in hydroponic systems. It is typically diluted in water and applied as a spray, drench, or soak.
