The Ista Full Spectrum LED Light 24" is a top of the line, full spectrum lighting system for freshwater or saltwater aquariums. With a versatile design, the unit can stand over top of the tank, or be hung on the tank depending on your aesthetic desires. The lighting system itself boasts an all new inverted color rendering index for improved accuracy, internal stabilizer, top of the line color mixing techniques and optical calculation which provides a natural and realistic source of light, one that your aquarium inhabitants will greatly benefit from. Helps to boost the photosynthetic process and increases the levels of chlorophyll and anthocyanidin to promote rapid growth and vitality among freshwater plants. The Ista Full Spectrum LED Light — 12" has an incredibly high, uniform luminance, being twice as bright as regular lights while consuming only half of the required electricity. The unit is made of sturdy and durable aluminum alloy, a material that helps to mitigate an increase in heat output and temperature while prolonging the lifespan of the lights. There is only a 4% luminous decay after 6,000 hours of use.