The specific size of our aquarium filter cartridge is 2.1 in L x 3.7 in W, making it very suitable for Top Fin BF5 BETTAFLO FILTER & DESKTOP AQUQRIUMS. This aquarium filter cartridge allows you to keep your water healthy at all times, as it contains 15 pack aquarium filter cottons that can be changed every 2-4 weeks.

The filter cotton is made of cotton and carbon, providing a 3-layer filtering effect that can filter and absorb 99% of the sundries to fish, ensuring a clean water source and the healthy growth of fish.

According to the test, the filter cotton can withstand a significant amount of sundries for no more than four weeks, so it is suggested to replace the filter cartridge every 2-4 weeks to maintain a healthy and clean water source at all times.

The installation process is quick and easy. Simply remove the used cartridge, rinse the new cartridge under cool water to remove any dust, and then insert it into the filter chamber to protect the health and safety of your fish.

HiTauing is a leading producer of high-quality filter cartridges for fish tank filters, ensuring compatibility with TOP FIN ELEMENT EF-S. The company maintains a thorough quality control process to guarantee the excellence of its products. If you have any questions, please feel free to contact us.

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