Davey CrystalClear ER 135sqft Cartridge Filter CompleteDavey CrystalClear ER 135sqft Cartridge Filter Complete Provides crystal clear water with minimal maintenance. Less water used, no backwashing needed. Ideal for applications where backwashing may not be practical or in areas where water may be scarce. Tank constructed from high impact polypropylene as a solid one piece mould for a non corrosive long life. Low profile designed with easy access to the filter cartridge for removal, cleaning, and