Rena Filstar XP Super Micro Filtration Pro Pads - 2 Pack

API Filstar XP Super Microfiltration Pads remove extremely fine waste, sediment, and particles from the aquarium while also helping to clear cloudy water. Change Micro Filtration Plus Pads every 1-2 months. Place pad in the top of the media trays above all other filter media. Polishes water for a crystal clear aquarium. New and improved canister filter media designed to fit the Filstar XP. Graduated hole sizes allow for increased cleaning efficacy. For ultra-fine filtration and polishing.