Description Filtering and Purifying hygger aquarium biochemical sponge filter is powered by an air pump that uses the water-lifting effect generated by rising bubbles and drives water flow through the filter sponge, which can effectively adsorb excreta and residual bait to achieve the purpose of filtering and purifying water quality for saltwater and freshwater aquariums. 2 in 1 Feature of Bubbler ① Oxygenation, with built-in a plastic air stone, provides enough bubbles and gentle flow. ② Filtration, the dense biochemical cotton on the upper layer can effectively absorb impurities, pet feces, and debris, while the circular concave structure increases the filtration surface, which helps improve filtration efficiency. ③ Culture, the extra chamber in the bottom with bio ceramic media which helps breed more beneficial stuff that the tank needs. For Small and Medium-Sized Aquariums This air-powered biochemical filter is 2.9 inches wide and 3.7/5.5 inches tall, making it work pretty well filtration for 1 to 20-gallon tanks with under 12″/15″ depth, and with any low-flow application, like breeding, bettas, snails, shrimp, etc. Cleaning and Replacement Filter All the parts included in the aquarium biochemical filter are detachable, which can be easy to assemble and disassemble. It includes two sponges that could be reused, it is recommended to use tank water to wash the filter assembly every 2–4 weeks or whenever you see a decrease in bubbles to ensure the filter works properly. Directions for Use Use Tips 1. Please rinse the filter to remove the dust before use. 2. Bio-sponge filters need to attach to an air pump (pump and air hose are not included).
