Top Fin® Retreat™ RF-L Filter Cartridges - Fish Tank Filter Cartridges - 6 Count

DESCRIPTION Keep your aquarium's water clean and healthy with Top Fin RF-L Large Retreat Filter Cartridges. These cartridges are easily replaceable, and feature coconut shell activated carbon, which serves to absorb undesirable odors, pigments and chlorine. Only at PetSmart. Features: Coconut shell activated carbon to help absorb undesirable odors, pigments and chlorine6 month supplyIncludes: 6 CountIntended For: Aquariums Color: White Product Dimensions: 7.9 in L x 2.7 in W (20 x 6.8 cm)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. Instructions: Step 1: Remove used cartridge.Step 2: Rinse new cartridge under cool water to remove dust.Step 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.