Ubbink AlgClear UVC 5000 7 W

This Ubbink PL-7W replacement lamp for AlgClear UVC devices ensures longer exposure to UV light, removes annoying algae from your pond and makes green water clear again! The UV sanitizer uses an antibacterial, fluorescent lamp that produces light with a wavelength of approximately 254 nanometers. When the water passes through the lamp and is exposed to this wavelength, most algae and bacteria are killed.