Traditional underwater pool lights can use 400 or 500 watts of electricity. An energy-saving alternative is the LED (light-emitting diode), which uses up to 75 percent less energy than incandescent underwater lights. LEDs last for years and come in multiple colors as well as white.
LEDs cost quite a bit more to buy than standard light bulbs, but they last so long you might never need to replace them, and they use so little electricity that you’re likely to see a difference on your electric bill.
A bonus: You can program your LEDs to put on a multi-color light show without using a color wheel or any moving parts.
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