I got a cheapo UFO grow light that has a fan and runs very cool for my fuge .and I love it . I tried the cheapo clip on lights from the big box stores , Ran a sol blue and a sol white ( at separate times ) and this one grows algae nice and thick and green with no burning at the surface . I am sure the kessil is a great light , just not for $400 I'd rather spend that on Corals or fish