• Unit includes a 11 watt ultraviolet clarifier (UVC). 
• FILTER for Ornamental Lakes or Large Aquariums, up to 12,000 L
• ideal for pond owners wanting simplicity, clear water and a filter system that can be easily hidden. 
• Ultraviolet water clarifier kills suspended algae with UV light. 
• The water clarifier ensures 100% clarity.  As water passes through the rays of an ultraviolet lamp located inside each unit, green water is eliminated by causing the algae to clump together to be removed by the pond filter.

Features:

• Power Cord Length: 22 ft
• Inlet/Outlet Size:: 3/4", 1, 1-1/4 and 1-1/2 " (recommend use 1-1/2" tubing)
• If you use large size tubing, you must cut off the rest of adapter
• VOLTS IN 220-240V AC 50Hz
• Recommend use with Pond Pumps Capable of Pumping between 1000gph to 3000gph
• Dual Filtration System to Provide a Clearer and Healthier Pond or Water Garden
• This Filter is Low profile and can be easily hidden along side of your pond
• Three Hose Connector (one for backwash)
• Dimensions: 24" tall x 15" wide

HOW DOES IT WORK?
STAGE 1 - MECHANICAL FILTRATION:

Water is pumped into the filter creating the necessary pressure to begin the mechanical filtration stage. Two foam discs collect various sizes of unwanted organic debris encouraging the growth of large numbers of beneficial bacteria which break down harmful pollutants.

STAGE 2 - BIOLOGICAL FILTRATION:

At this stage the water passes through the bio-balls at the bottom of the filter. These have a large surface area & provide a habitat for beneficial bacteria to grow which naturally convert the harmful toxins of ammonia & nitrites into useful nitrates to support a healthy pond environment.

STAGE 3 - UV CLARIFICATION:

The water which may contain microscopic suspended algae spores passes the UV lamp clumping and killing the spores to give crystal clear water.

WHY This External Pond UV Bio-Filter SO EFFECTIVE?

• Water is slowed down as it passes the lamp to increase UV penetration
• Quartz glass tube covering the UV lamp permits effective penetration of UV rays.
• Ordinary glass cuts this by 90%
• UV lamp runs at optimum operating temperature in an enclosed chamber
• Water is kept as close as possible to the UV lamp to maximize UV efficiency
• Single ended lamps last longer and have higher UV output