This Special System is put together by ourselves at Pondkeeper - it includes the extra large Biotec 30 Pond Filter combined with the Aquamax Premium Eco 16000 Pond Pump and Bitron 72C UVC.Suitable for decorative ponds to 65,000 litres (14,300 gallons) and ponds with fish up to 32,000 litres (7,000 gallon). Can also cater for koi ponds with 16,000 litres (3,500 gallon). The high build quality and features contained in all of this kit\'s components make this one of the easiest systems to maintain.