Had this 24" 6 bulb T5 over my 40 gallon. Three of the bulbs are only a few months old and I have 3 brand new unopened bulbs you can swoop out with the other 3 older ones. Has built in 2 channel timer. I paired it with 2 UV 18" LED strips to help get that pop like a stunner strip. Open to all live stock trades.[IMG] black right-pointing triangle[/IMG]