? Eco-friendly: Solar-powered decorative fountain makes it on all the time without having to flip a switch. It's good for the environment using renewable source of energy ? Longevity?water fountain pump has a built-in brushless motor that provides a longer service life and lower energy consumption ? Product Advantage: This fountain can aerate the pool to increase the pH of water and keep water circulating to improve pond and fish life ? Applicable for Various Occasions: Solar fountain for bird bath, fish tank, small pond, garden decoration, water circulation for oxygen ? Suggestion: Make sure you have put enough water in the fountain so that the pump can stay entirely under the water. The fountain works only when ALL panels are exposed to FULL, DIRECT sunlight. A leaf shading one panel keeps it from functioning. It does not store any energy.