Review on 🐟 Huijukon Bio Sponge Filter: Premium Aquarium Filter Sponge for Betta, Fry, Shrimp, Breeder; Ideal for Freshwater and Saltwater Fish Tank by Amy Smotherman

If you have a 10 gallon tank that is not overloaded with fish this is the perfect filtration setup. They have mechanical filtration in the form of black sponges, then under the sponges there are two compartments in which you can load a mixture of zoolite and activated carbon as a biological medium. as the crow flies and you're in business! Please don't forget to cycle the tank before adding fish when starting a new tank. You will need to run the tank with this filter for at least a week and place a feeder or two to build up some ammonia in the tank to naturally convert nitrite and nitrate. If you already have a working tank and a hanging filter, you definitely need this submersible unit to help with tank filtration. However, one tip is that you should use an air pump that is one size higher than the current tank size that you must run this submersible filter through in order for it to filter the tank at its best. It's also a very quiet bubbler that works like a powerful all-around filtration system.