Aqueon's modular LED Aquarium Light Bulbs fit inside Aqueon LED Modular Fixtures, LED Deluxe Full Hoods, and LED Strip Lights. These Day White LED light bulbs provide all-purpose white light for crisp, bright illumination of freshwater and saltwater fish tanks. The LED lamps maintain their brightness and color over time while using 70% less energy than T8 fluorescent lamps. Each LED lamp is easy to install and simply plug and “snap” into place inside the appropriately sized light fixture.