flexman 4 Packs Assembled Filter Cartridges, Replacement Filter Cartridges with Double Sided Filtration,Repeatedly Blue Filter Cartridges for Aquarium Tortoise Tank

[EFFECTIVE CARBON FILTRATION] The interlayer contains a small amount of activated carbon, effectively helping to clean harmful substances and improve water quality.

[SUPER ADSORPTION] Double‑sided design filtration ensures super adsorption, providing better performance and high reliability.

[ENHANCED FILTERING EFFECT] The filter cartridges can be repeatedly added to the filter box, enhancing the filtering effect and maintaining optimal water conditions for your aquarium.

[HIGH-QUALITY PVC CONSTRUCTION] Manufactured with excellent PVC plastic, these cartridges strictly adhere to factory quality control, ensuring durability and long-lasting use.

[EASY TO USE] This filter accessory replacement is designed for user convenience, making it easy and simple to install. Get ready to experience improved water quality and a cleaner aquatic environment.