Pre-filter Sponge: Filters out impurities, capturing hair and debris, the ion exchange resin filters the water back to ensure every drop is healthy, making the water cleaner, fresher and extending the life of the pump.
PERFECT COMPATIBILITY: The replacement water fountain filters are compatible with the 2.5 Liter Square Pet Fountain.
KEEP YOUR PET HEALTHY: Help keep the pump clean between cleanings, maintain fountain flow rate, and provide a better quality of living for your pet with pet safety.
Replacement Frequency: We suggest to replace the pet fountain filter 2-4 weeks to keep the water fresh and clean.