12 Pack Replacement Small Size Cartridges for Tetra Whisper Small Fish Tanks Filter; Refilled Filter Cartridges S Size for Aquarium Kits 3-10 Gallons

Features

• Perfect replacement for Tetra Small Filter Cartridges S Size; works for 3~10 gallons small fish tank filters; Measures 4" x 2.2" (L x W), fits many brands of Small HOB filters. Please check compatibility before purchasing. Replacement for imagitarium B/C filter;Replacement Filter Media Cartridge for NuWave Betta Fish Tank
• In a three-layer filtration design, double-layer microfiber cotton can effectively absorb solid impurities such as debris, and fish waste; and the inner layer of activated carbon can absorb odor and discoloration, reduce fishy smell, improve yellow water, and improve water quality. Clearwater provides you with a better fish-viewing effect.
• Convenient to replace and install, and even no need to get your hands or even fingers wet
• Replace the filter cartridge every 3 to 4 weeks if there is reduced water flow.
• 12 Pack – 1 Year Supply, Continuous, high-efficiency, low-cost, replacement Refills