The Coralife Aqualight Blue Moon Glow LED light has a spring clip that easily attaches to an existing Aqualight or other lighting fixture or hood.

The Coralife Blue Moon Glow LED Lights are meant to be used as night lighting for aquariums during the 12 or more hours when the high output daytime lighting is turned off. Use AT LEAST two for a 18 to 36 inch tanks, three for 48 inch tanks, and four for 60 and 72 inch tanks. Please keep in mind that these lights are very low output on purpose in order to not interfere with the natural night-time period of your aquarium's organisms.