Function 3 in 1: Water circulation, filtration, increase oxygen multi-function, multi-purpose, make your water clear and bright.
B&K External filter: equipped with a retractable filter cartridge plate, suitable for more than 95% of the fish tanks on the market.
Large-capacity filter box: It adopts high toughness and environmentally friendly materials, and the large-capacity filter box meets your different needs.
Drainage tube: The water in the filter box is gently returned to the fish tank to make the water flow silent.
Efficiency: Filtration to keep crystal clear water.
B&K SOBO Aquarium Heavy Duty External Power Head Top Biological Filter WP-4880F