AquarioPi
Automate the schedule of multiple remote controlled aquarium lights
AquarioPi is an IR controller that will change the light settings around the clock on multiple lights, and multiple brands of infrared (IR) remote controlled lights.
All that's required is a Raspberry Pi, a resistor, an IR LED, and a breadboard or other type of circuit board or connection to the LED and resistor.
Visit the AquarioPi Wiki for more information.