There are many types of lights available. The old technology of a 90W to 500W bulb in a sealed fixture is always available. Even so, white or coloured LED lights have been on the market for 3 or for years now. It is often possible to replace an existing light with and LED. In this case, it is necessary for the whole light to be changed and not just the bulb. In the context of a pre-existing pool, the complexity involves the lighting niche. It is necessary to check that the pre-existing lighting niche can accommodate the new light. We can also offer you accessories that can be used with lights: lighting niche, junction box, timer, monitor to change the colour of the lights, transformer 12V/120V.