Filter brushes have long been used in the koi industry as a great filter media. Brushes will collect large amounts of debris yet will not restrict water flow even when dirty. Filter brushes work well for both solids removal and biological filtration. Available 15″ or 23″ long and can be cut down in length if needed. Filter brushes have long been used in the koi industry as a great filter media. Brushes will collect large amounts of debris yet will not restrict water flow even when dirty. Filter brushes work well for both solids removal and biological filtration. Available 15″ or 23″ long and can be cut down in length if needed. 15″ brushes are used in Pro-Series PSMFB and PS1FB skimmers and all Axiom PSA skimmers. Brushes are approximately 4″ diameter.
