If your pool is heated with electricity install a heavy-duty timer to run your pump and heater for just 12 hours from 8:00 p.m. to 8:00 a.m. This will save you electricity. This also applies for hot tubs/spas.
When you install a timer to help ensure your safety, your pool must be plugged into a Ground Fault Circuit Interrupter (GFCI) outlet located a minimum of 3 metres (10 feet) from your pool.