The Innovative Marine Skkye 36" LED Light 18W 456nm Light Strip is an affordable turnkey solution for fresh & saltwater fish or reef aquariums. If you use one 14K or 10K with one 456nm Actinic you can support soft corals in a shallow aquarium. As these lights are only 3-1/2" wide you can fit multiple lights over your tank. Since each light has its own power cord, you will have independent control over each light. Sleek aluminum casing with acrylic lens. 456nm, 18 Watts: Each high brightness LED boasts an incredible 120 lumens per watt with individual reflectors with 120 degree optics for wide uniform coverage. Light Dimensions: 33-3/10" long, 2-1/4" high (3" w/ legs), 3-1/2" wide. Sliding Extension Mounts to securely attach to rimless and framed aquariums For tanks from 34-1/2" to 37" long. The Extension Mounts will expand to fit tanks up to 37" long.