Improve your aquarium or terrariums clarity by using All Living Things Replacement Filter Sponge. Clean filter sponges remove unsightly dirt and floating debris. Only at PetSmart. Features: Clears/cleans aquarium and terrarium water Includes: 2 Filter Sponges Used For: Aquariums/Terrariums Dimensions: 2.5 in L x 1.3 in W x 1.6 in H Compatible With: All Living Things Turtle Filter Directions: Remove the top of your All Living Things Turtle Filter and remove old sponge filter. Install this replacement. Clean sponge weekly, or sooner is the water flow decreases. Never use soap, detergents, or cleaning agents, as they can harm your turtle. Replace filter sponge if it becomes damaged. Size: Large.