Top Fin® Element EF-S Filter Cartridges - Fish Tank Filter Cartridges - 3-12 Count

DESCRIPTION Keep the water in your aquarium clean and safe for your fish with this value pack of Top Fin EF-S Element Filter Cartridges. The cartridges in this 12-month supply feature activated carbons, and have proven highly effective in removing waste, odors and more from your aquarium water. Only at PetSmart. Features: With activated carbon to help remove heavy metals, odors, pigments, and organic wasteRefill for Top Fin BFS Bettaflo Filter and Desktop Aquariums with Element Filters12 Count Includes: 12 CountIntended Pet(s): FishMaterial(s): CarbonColor: White, BlackProduct Dimensions: 2.1 in L x 3.7 in W (5.3 x 9.3 cm)Instructions: 1. Remove used cartridge.2. Rinse new cartridge under cool water to remove dust.3. After rinsing, insert cartridge into filter chamber. Make sure cartridge fits completely into filter chamber. Caution: Never use soap, detergents, or cleaning agents while cleaning the aquarium or equipment as they can harm your fish. This is not a toy. Keep out of reach of children.Advice for Use: To help maintain a healthy aquarium, change filter cartridge every 3-4 weeks, or if water flow becomes obstructed. Remove cartridge when medicating water as carbon will absorb medications. Change out 10% of the water weekly or 25% monthly. Use a water conditioner (sold separately) every time you add fresh tap water to your aquarium.