WSFC3J20R - 20" Jumbo Cartridge Set of 3 systems If this period is less

If this period is less than 6 months investigate water source for preventable contamination or fit pre-filtration such as a RainCatcher

hence why a pre filter should be installed

This 40 Watt UV water sterilising lamp of standard output (400 mA) fits into UV chambers longer than 850 mm and is compatible with T5 Quartz Sleeves

Fine silt/mud will coat the carbon and render the cartridge largely ineffective

Mounting: SS Frame

WSFC3J20R - 20" Jumbo Cartridge Set of 3 systems If this period is less3 x 20" Jumbo Cartridges for Rain & Ground Waters: 5m Pleated Paper (for Sands, Sediment, and other floating debris), 5m Coconut Carbon (for taste smell discoloration and sprays), 1m Melt blown (for mud & fine silts) For WSR3P and other 3 filter systems with 20 inch sumps.