Compatibility: 10 Pack carbon filters 10 Pack pre-filter sponges and 10 Pack 8D filter sponges set perfectly for 2L/67oz Round stainless steel pet water fountain.

Triple Action Filter? Pet fountain filters come with 3 layer filtration system. High density cotton layer coconut shell activated carbon and ion exchange resin they can filter hairs debris and heavy metals and improve the taste of the water.

• Pre-filter Sponge & 8D Filter Sponge: High density pre-filter sponge can further filter out impurities fully leverage the filtering effect; High density 8D filter sponge can filter impurities preventing them from entering into pump it can help extend pump life.
• Easy to use: We advise you to replace filter and sponge every 3-4 weeks to keep the water clean; Please change them more often if you have multiple pets.
• Warm Tips: Before replacing the filter please rinse filter 3-5 minutes thoroughly with drinkable water which will prevent carbon dust from shedding into water keep water clean.