Tetra Tetra Pond GreenFree Ultraviolet Water Clarifier Collection

The Tetra Pond GreenFree Ultraviolet Water Clarifier Collection works to keep your pond clean, clear, and free of unsightly green algae. Available for ponds up to 660 gallons, up to 1,800 gallons, up to 4,400 gallons and up to 8,800 gallons, each ultraviolet clarifier controls heavy algae blooms in ponds and water gardens to keep water clean and green-free.