There are several types of filtration: pre-filters, mechanical, biological, pressurized, ultraviolet, and gravity.
• Pre-filters remove debris from the water and protect the pump by housing it, thereby leading to a longer pump life and better performance.
• Mechanical filters use filter pads and work with a pump to move the water and catch large and small pieces of debris.
• Biological filters use beneficial bacteria to naturally break down organic decaying material.
• Pressurized filters combine the power of mechanical and biological filtration. The pressure in these filters help keep the water moving quickly, not giving debris a chance to settle in your pond. The pump works with the filter to mechanically keep your pond clean. The filter pads catch debris from the water as it passes through the filter.
• Ultraviolet (UV) Light Technology ensures water clarity and a healthy pond environment for plants and fish. Water is pumped through a carefully calibrated UV chamber at just the right speed to provide maximum exposure. The UV light helps clean the green out of the water. The results are a crystal clear and healthy pond you can enjoy all year round.
• Gravity filters pump water from the pond into the filter and then flows back into the pond by gravity. These filters must be positioned slightly higher than water level to enable its return under gravity. Water is pumped in through the top of the filter, through the UV clarifier, which then trickles down through the various filter media and is gravity-fed back into the pond. As the water flows through the filter, air can enter the water causing the exchange of gases enabling the different species of bacteria to grow to help keep the pond clean.