Powkoo 3-Layer Ultra-Thin Round Aquarium Filter Sponge Filter For Shrimp, Betta, Fry, Nano Fish Tank

Powkoo sponge filter provides filtration increase oxygen aeration in one solution 3-layer filtration system design provides more surface area traps floating debris and fine particles keep your fish tank crystal clear and clean closer to the natural water quality What you get: 1 x Powkoo aquarium sponge filter 1 x Powkoo retail package bag Warm reminder: Soaking the sponge filter in the aquarium (fish tank) water for 5 minutes before usage easy for beneficial tiny creatures formed When cleaning the sponge be sure to use aquarium water or tap water never use hot water Notes: replace the bio sponge every 6 months to ensure the filtering effect and the growth of beneficial tiny creatures