Aquarium Sponge Filter Luxury Set for Breeding Fry, Fish Tank Fine Small Sponge Filter up to 10 Gallon, Fish Tank Mini Bio Foam Filter for Betta Shrimp (5x Mini Sponge Filter)

Good sealing and strong suction Effective biochemical filtration - Keep Water Clear Single sponges design (Replaceable sponge) -Soft Fine Sponge,Cultivation of beneficial bacteria Air Powered - Improve dissolved oxygen. The air chamber produces tiny bubbles which increase the oxygen solubility of water. Air Pump and Air tube Not Included. Sponge Filters are a great choice for small volume tanks because they remove most of the solids from your water while still providing good filtration. By using an external air pump or integral waterpump to draw off some of what you want filtered, this type will allow just enough clean oxygen-rich fluid back into its tank so that all may live happily ever after! Most sponge filters are efficient for small volume tanks. They provide both mechanical and biological filtration, which makes them an excellent choice in homes with fish like dwarf cichlids or guppies; they have almost no way to suck the animal through their filter so it's perfect if you want some peace of mind that your pet will never get stuck on one side while breathing underwater! This CORISR Mini Aquarium Sponge Filter is replaceable, if you want yo buy replacement sponge, please search for " CORISR Mini Aquarium Sponge Filter Replacement Sponge ". What Maintenance Does It Require? The sponge filter needs to be rinsed every time it becomes dirty, about once every 2-4 weeks. It's helpful to reserve the beneficial bacteria by washing gently with water from your fish tank instead of tapwater and after 3 - 6 months' usage (or when worn out), you should replace them so that they continue providing optimal filtration for their system!