COIDEA Air Bubbles Aquarium Submersible Light Decoration with 12 Multi-Colorful Changing Light for Fish Tanks (Air Pump not Included) This product is totally waterproof so that it can be completely submersed in the water. Made of high-grade material, which is non-toxic, safe, energy-saving and eco-friendly. The Plate Stone is well-distributed, with evenly bubble outle, can be used to light for fish and also be used as a decoration for your aquarium.( air pump not included ) The light effects are so bright and you can view the fishes at the tank clearly and give you a totally different vision. There are strong suction cups at the bottom of the light, which will help you fix the light in the tank. Using ultra-hard silicon carbide,after high-temperature firing process,to produce good ozone and corrosion resistance with excellent product dispersion and filter performance. RGB LED light air bubble stone with high brightness, high energy efficiency, and high reliability bulbs, Multi-color changing automatically creates beautiful bubbles in your aquarium, ideal for aquarium, fish tanks, pool, pond, etc. Excellent dust-proof/waterproof effect with level IP 68 and put bubble air stone entirely under the water, totally sealed design specially for underwater work, easy to fix with strong suckers, firm and reliable. Can work with air pump for air bubble billow effect (Air Pump Is Included) Low working voltage (DC 12V), safe and won&#039;t cause any harm to people or fish Strong suction cup help fix cable firmly in the tank Totally sealed design for underwater work(Power Adaptor must be out of water) Multi color Bubble Light :Colorful your aquarium with more choice. Totally sealed design for underwater work. Safety low-voltage design:Energy saving, low heat, long-lasting. Easy operation. Wildly use for aquariums, fish tanks, pools and so on. Check whether the light is broken or there are any cracks. If not, then follow the steps below. Test the light before putting it into fishbowl. Plug the slot into socket, and switch on. If all the LEDs are working, then it is normal. Clean the surface that is used for fixing the sucker of the light. Connect transform and turn on the switch. 1 X 12 LED Round Bubble Light 1 X Air tube 1 X Sucker 1 X 12V DC adpter (US Plug) Indoor use only. Please keep the power adapter and joint away from water. Air pump is not included