Hygger Small Aquarium Bio Sponge Filter Mini 6-20 Gallon Test Kit Ferrous Sulfate

Ferrous Sulfate

bituminous coal-based carbon

creeping rhizomes

Reef Rock Cave

including bristle nose

Hygger Small Aquarium Bio Sponge Filter Mini 6-20 Gallon Test Kit Ferrous Sulfate2 Stage Filtration System The hygger Bio Sponge Filter provides mechanical and biological filtration to help keep water clear and your tank healthy. Fine sponge catches fish waste and tiny debris while bio balls provide plenty space areas for the colony of beneficial bacteia No More Fish Getted Suck up This small sponge filter is fish safe seamless design without any moving parts, protecting small fish from getted suck up. Perfect for shrimp tank,