The AquaEl Leddy Slim Plant LED Fixtures are appropriate for planted aquariums. The red, white and blue LEDs combine to produce a 8000K white light. These thin but powerful lights come with a very well designed light mount that can be adjusted to fit the dimensions of oddly sized tanks. The light is 40" long and the mount can accommodate tanks up to 48" wide. - 36W. 8000K. - Appropriate for planted freshwater aquariums - Black light body - For tanks from 40"-48" wide. The mounts slide easily, but remain firmly in place.