The 2500 GUV Gravity Pond Filter is a must-have for anyone looking to add a pond to their garden. It effectively clears green water and maintains excellent water quality, ensuring your fish stay healthy and happy. Perfect for both beginners and experienced pond owners, this filter keeps your pond clean and vibrant.Combining UV and biological filtration, the 2500 GUV Gravity Pond Filter uses SUPRA+ Bio Media to encourage the growth of beneficial bacteria for a balanced pond ecosystem. With its convenient flip-up lid for easy access and its green design to blend naturally into your garden, this filter is both efficient and unobtrusive.