Boyu YT-25000 Bio Filter is a highly effective complete biological box filtration system for large fish ponds, supplied with a high-flow pond pump, connective hosing, a powerful UV clarifying lamp to eliminate harmful bacteria and ensure crystal clear water, and multi-layer foam filtration with a simple pull-up handle cleaning system. Designed for large commercial fish ponds, the YT-23000 gives Nigerian fish farmers a complete, ready-to-install water purification system that handles the filtration demands of large pond systems in a single powerful unit.