Pool And Spa Lighting – How To Change Or Replace Underwater Lights and Bulbs For Swimming Pools And Hot Tub Spas – Lighting is essential if the pool is to be used at night. External lighting of your pool, spa, or water feature is possible with a variety of high- and low-voltage systems. For installation and maintenance of external systems, it is recommended you consult your local electrician. For lighting the water from within, however, there are also a variety of options…