Viqua Sterilight S12Q-PA 12 GPM  Ultraviolet System 99.99% destruction of bacteria, virus, and protozoan cysts (Giardia lamblia & cryptosporidium) Natures way to protect your water without the addition of harmful chemicals NEW electronic "ICE" ballasts featuring open loop current control (patent pending), ballast features Compact design incorporating a polished 304 stainless steel reactor chamber Free shipping within the continental US!