Fluval U4 Filter Foam Pad Set Of 3 – Custom Fit For U4 Underwater Filter, Mechanical Filtration For Aquariums

Keep your Fluval U4 filter running smoothly with this 3-pack of replacement foam pads! Designed for precise fit to prevent water bypass, these pads provide essential mechanical filtration, trapping debris before it clouds your tank. The pore size balances efficient flow with less clogging, so you get longer service between cleanings. Suitable for freshwater, saltwater, or reptile setups—just swap out the old pad and pop this one in. Helps maintain clear, healthy water for your fish. An easy, affordable way to maintain your U4 filter’s performance. Because a clean filter means a happy aquarium!