Aqua UV's Ultima II filter provides amazingly effective and efficient biological and mechanical filtration for Koi ponds.

• Easy Setup And Assembly 
• No Blower Needed 
• Just Minutes To Backwash 
• Internal Jets Do The Work For You 
• Unique Patented Media Design 
• Does Not Channel or Clump Together
• 1.5" inlet and outlet  Dimensions: 22" x 12" 

The Ultima II 1000 is designed for ponds up to 1000 gallons. The high flow rate allows you to circulate your pond once every hour, giving you the optimal turn over rate to keep your fish healthy and your pond clear.