Filter Cartridge Replacement Compatible with Aqueon: 16pcs Small Filter Cartridges, Unit Size: 3.66*2.55 inches. This aquarium filter cartridge is compatible with QuietFlow E Internal Power Filter Size 10 and Minibow Aquarium Filters Size 1/2.5/5 Gallon

Four-Stage Filtration: The filter is made of dense dual-sided mesh, Better thickness provides better filtration, Ultra-Activated carton instead of ordinary carton and also add processed zeolite, which can effectively filter and absorb impurities in the water to keep the clean water source and provide the healthy growth environment for fish

Efficacy of Zeolite: It can adsorb ammonia, heavy metals, and other harmful components in the water. It effectively balances the PH value of the water body to achieve a stable water state. Zeolite can also improve the fertilization efficiency of aquatic plants, helping your aquatic plants and nitrifying bacteria grow faster, live more comfortably, and stay healthier.

Quick Installation: Turn off the filter and remove the used cartridge. Rinse the new cartridge under cool, clean water or aquarium water to remove dust. After rinsing, insert the cartridge into the flushing chamber and make sure it fits completely into the chamber.

Professional After-Sales Service: TIPS: We recommend replacing the filters every 2–4 weeks to maintain water quality (this depends on the number of fish in your tank).