In-Tank Germicidal UV Light, helps to control and prevent the growth of bacteria inside of your storage tank.
The Vertical Type Germicidal UV Light is designed to be "fixed" to the lid of tank, and then hang in the center of the tank.
Alternative to complete Home UV that requires no electricity. The UF Membrane will physically capture bacteria, rather than kill them like UV. This will require the Membrane to be flushed on a regular basis.