Checking the electrical work on a reef aquarium is important to ensure safety and prevent equipment failure. Regularly inspect all connections, power strips, and outlets for signs of wear, corrosion, or damage, as saltwater can cause corrosion and increase the risk of short circuits. Ensure that all equipment, such as heaters, pumps, and lights, is properly grounded, and consider using GFCI (Ground Fault Circuit Interrupter) outlets to cut power in case of a fault. Additionally, keep power cords organized and away from water to minimize risks. Routine checks help protect both your aquarium inhabitants and yourself from electrical hazards.