Bought this a while back for my 75G and THOUGHT I knew what I was doing when it comes to aquascaping, but it turns out I'm better with the low light plants... Anyways, I used this thing for about 100 hours total before seeing insane amounts of black hair algae, so I took it off and haven't used it since. This light is less than a year old and has ZERO flaws. Paid $130 for it new, asking $90. No trades please. If you have any questions, please feel free to ask! This light has plenty of life left in it.