Maintaining a healthy and clear pond requires a comprehensive filtration system that includes mechanical, biological, and UV clarifier filters. Mechanical filters trap debris and particles, while biological filters use beneficial bacteria to break down organic waste. UV clarifiers use ultraviolet light to kill harmful microorganisms, while pressurized and gravity-fed filters can handle high water flows and are ideal for larger ponds. By combining these different types of filters, pond owners can create a customized filtration system that promotes a healthy pond ecosystem.