Typically, backyard swimming pools are equipped with underwater lighting. Just like any light, the bulb can burn out and need to be replaced. There is no need to lower the water level in your pool to replace it. I came here thinking this is replacing the entire fixture, obviously not.
A typical pool light bulb should last for more than 0hours, while its protective casing lasts for years.
However, corrosive water chemistry in your pool can make the fixture and the screws that hold the pool light together weaker which may call for replacement.
When it comes to changing your pool light .
You will first need to purchase the correct replacement pool light bulb and lens gasket for your light fixture. KingPedroll - The LED bulbs look like bulbs but have extra circuitry in them to provide light changing capability. No need to spend $5or more to turn your existing pool light into an LED color changing light! I will be replacing my light soon and was wondering about the epoxy part of the install.