Bog Filter , Enhanched Koi Pond Filtration

BOG FILTER -- Pond filter maintain water quality and make beautiful  koi  fish. Bog filter system employs a lush planting of gorgeous, water-loving plants to remove excess nutrients and improve water quality. A bog filter is an area dedicated for the dense planting of water-loving marginal or bog plants. It is a smaller, supplementary pond usually 10-20% of the size of the main water feature.