Physan 20, 1 galPHYSAN 20 is a broad range disinfectant, fungicide, virucide, and algaecide which effectively controls a wide variety of pathogens on hard surfaces and plants. Its applications include greenhouses; hard surfaces; lawn and turfgrass; seedlings and cut flowers; decorative fountains, pools and birdbaths; and plants. It is an EPA approved concentrate formulated with unique germicidal agents to provide overall protection for your plants and greenhouses. It