Little Giant 566120 Pressurized Biological Filter, 1200 Gallon

Highlights:

• Pond Size: 1200 gallon
• Easy to use back-flush system
• Pressurized filtering action: mechanical and biological
• Grip-n-twist handle allows filter cleaning without removing lid
• This filter is designed to filter the water in small lakes and ponds, and uses two types of filter media
• Mechanical filter media: High surface area sponge media traps solid waste, maintaining clean and healthful water for both fish and plants
• Biological filter media: Inert media (bio-balls) offer a large surface area and high porosity that allow the development of beneficial bacteria, which breaks down pollutants such as ammonia and nitrites