Physan 20 is an algaecide fungicide bactericide and virucide with an incredibly wide range of applications. Use Physan 20 to control algae anywhere in the greenhouse including floors walls walkways benches trays pots wicks capillary matting and buckets. Use it on algae in fountains decorative water displays pools and evaporation coolers. Physan 20 can be used to treat a variety of diseases affecting lawns turf and grass including Fairy Ring Dollar Spot and toadstools. Not recommended for edible crops.