TetraPond Replacement Bulb For GreenFree UV Clarifier, For Clean A...

TetraPond Replacement Bulb For GreenFree UV Clarifier, For Clean And Clear Ponds, 18-Watt, Model:19528

• REPLACEMENT BULB For use in TetraPond GreenFree UV Clarifier to control heavy algae blooms in ponds and water gardens and keep water clean and green-free
• ULTRAVIOLET LIGHTANNUAL MAINTENANCE Replace bulb every pond season for continued algae control
• HIGH-EFFICIENCY For up to 11 months of continuous operation
• 4 AVAILABLE SIZES 5 watts for ponds up to 660 gallons 9 watts for up to 1 800 gallons 18 watts for up to 4 400 gallons and 36 watts for up to 8 800 gallons