T5 UVC Pressure Flo 10W 4 Pin 20W T5 UVC Pressure Flo 10W 4 Pin, description and features: 364mm Watts: 20 For pond clarifiers. Destroys suspended algae. Pond water clear as day - all year round. ATTENTION: HAZARDOUS ULTRAVIOLET RADIATION!"The radiation from this lamp is dangerous to eyes and skin. Installations...