Physan 20™ Algaecide, Fungicide, Bactericide, and Viricide 16 oz.
Physan 20™ provides algae control for garden ponds, bird baths, fountains, water displays, and decorative displays. Physan 20 clears fountain water and removes suspended organic debris by keeping fountain basin water clear and free from odor by preventing organic debris from building up. Great to use with Colorfalls, Fountains, and Bubblers in your garden pond. Weekly dosage of one teaspoon per 104 gallons of water is recommended.