The Flexzion 36 Watt UV Sterilizer Light is a powerful and compact light that is perfect for sterilizing aquariums, ponds, and lakes. With a color-black finish, this light is easy on the eyes and provides superior visibility in low-light conditions. The Flexzion 36 Watt UV Sterilizer Light features a permanent blue filter that eliminates algae and harmful bacteria to help keep your fish and other aquatic friends healthy. This light also features an instant control function that allows you to turn on or off the light instantly. Additionally, this light has an efficient design that prevents waterborne pathogens from entering the aquarium. Finally, this light is made from a durable plastic that is resistant to cracking and breaking.