Product features: multi-purpose oxygenation, illumination and ornamental light. Straw hat lamp beads with high brightness, brilliant colors, uniform air outlet, 12V DC power supply, low voltage protection. Convertible to pink light, blue light, purple light, green light, dazzling color. A fine bubble, sufficient light, soft and non-invasive, a fish eye. Sealed and grouted, safe and leak free. All size aquariums, light water or saltwater aquariums are suitable.< /p> Note: The bubble lamp itself cannot produce air, need to be used with an oxygen pump to produce bubbles.