Feature
Size: 4" x 4" x 1"
Aquarium filter media serves mechanical and biological filtration
Remove ammonia & nitrite and stabilize PH value
Porous surface good for bacteria to colonize
Enhance water permeability and adsorption capacity
Dissolve elements and minerals necessary for aquatic organisms
For freshwater, pond and saltwater fish tank use
Package includes 6 pack aquarium filter media blocks.