Top Fin® Ceramic Rings - Aquarium Filter Media - 26.4 oz

DESCRIPTION Top Fin Ceramic Rings help support the growth of beneficial bacteria that break down toxic fish waste for optimal water quality. These rings are effective in supporting the growth of beneficial bacteria to optimize water quality and maintain a healthy aquarium. Using an effective form of biological filtration is critical when maintaining a healthy aquarium. Ceramic rings help support the growth of beneficial bacteria that break down toxic fish waste for optimal water quality. Only at PetSmart.Features: Helps support the growth of beneficial bacteria for optimal water qualityUniversal Medium RefillIdeal for Top Fin PRO Series Canister Filters Intended Pet(s): FishProduct Weight: 26.45 oz (750 g)Instructions: Place media directly into desired filter tray.Warning: Contains small parts.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 1/2-2/3 of biological filter media every 6 months. Do not replace all filter media simultaneously. Stagger media replacement to ensure bacterial population. Change 25-30% of water weekly. Use a water conditioner and bacteria supplement (sold separately) every time you add fresh tap water to your aquarium.