Tetratec EasyCrystal FilterPack 250/300. The innovative EasyCrystal FilterPack 250/300 cartridge is perfectly matched to the EasyCrystal Filter 250 and EasyCrystal FilterBox 300 filters, providing crystal-clear, healthy water through intense biological and mechanical filtration. The double-layer wadding with its wide surface area retains even the smallest suspended particles.
