Pentair pool filters are highly efficient, and are designed to thoroughly remove impurities like dirt, leaves, grass, hair, body oils, sunscreen, and several types of bacteria from the water. Swimming pool filters from Pentair are available in three different types: Cartridge, Diatomaceous Earth (DE) filters, and sand filters. Pentair provides filter models from each category to fit both above ground and inground swimming pools.Cartridge swimming pool filters from Pentair are basic, cost effective and easy to maintain. Pentair’s cartridge filters have a design with proven effectiveness that strip particles from pool water with ease. These cartridge filters have a chemical-resistant tank and a colorless cartridge, so they’re easy to clean. And as mentioned, the maintenance for this type of pool filter is fast: Open it, remove the cartridge, hose it off, and reinstall.