Top Fin® CN-L Corner Filter Cartridges - Fish Tank Filter Cartridges - 3 Count

DESCRIPTION Top Fin CN-L Corner Filter Cartridges are refills for Top Fin CN20 Corner Filters. The activated carbon in the filter sponge helps remove heavy metals, odors, pigments, and organic waste, keeping aquarium water safe and clean for your pet fish. Only at PetSmart.Features: With activated carbon to help remove heavy metals, odors, pigments and organic waste3 Count3-Month Supply Includes: 3 CountIntended Pet(s): FishMaterial(s): CarbonColor: White, BlackDimensions: 7.4 in L x 5.3 in W (18.7 x 13.4 cm)Advice for Use: To help maintain a healthy aquarium, change filter sponge every 3-4 weeks, or if water flow becomes obstructed. Remove filter sponge when medicating water as carbon will absorb medications. Change out 10% of water weekly or 25% monthly. Use a water conditioner (sold separately) every time you add fresh tap water to our aquarium.Instructions: Step 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.