Features:

• Contents: 2 sponges per package.
• Compatibility: Suitable for Fluval 104 and 105 filters.
• Function: Traps large particles and debris for effective mechanical filtration.
• Design: Customized to prevent bypassing of debris, with ideal pore size for efficient water flow and longer filter media lifespan.
• Biological Filtration Enhancement: The structure of the sponge promotes the growth of beneficial bacteria, boosting biological filtration.
• Usage Tips: Replacement: It is recommended to replace the sponge every 1-2 months, depending on the aquarium load and water quality.