Viqua strongly recommends 5 micron sediment pre-filtration to maximize efficiency of UV sterilization.

Turbidity in Water will reduce UV light's Effectiveness
Sterilight Systems
Sterilight Systems
Sterilight Replacement UV Lamps & Accessories
Sterilight Replacement UV Lamps & Accessories
UV Max Systems
UV Max Systems
UV Max Replacement Lamps & Accessories
UV Max Replacement Lamps & Accessories