ReefBrite XHO Actinic & 50/50 LED Strip Lights encompass cutting-edge LED technology. Utilizing 3 watt LED’s for maximum performance and output, the XHO LED fixtures are great replacements for T5 HO strip lights. These XHO lights are not just great for coral health, but are known for making corals pop like no other light on the market. These versatile units can also be used to replace any standard strip light or to create a custom lighting system. 24", 36", 48", 60", 72" & 84" versions. The 84" version is the longest commercially available aquarium LED light on the market.Related Articles:Reef Aquarium Hood Lighting Chart I What are Wattage, Lumens, Lux and PAR? Article I Getting the Most out of Your Light I Are There Reasons To Buy Anything Other Than An LED Light For Your Aquarium?.