i went out and got the hi-light LED system for my little 20 gallon tank, and i must say that they work great...the only beef i have with them is that if you point the led down into the tank, you get more of a spotlight effect than i want so insetead i angle the lights up so they hit my reflector and then bounce back down into the water..very cool though....i leave mine on all night, untill my normal lights come on!
good luck
jon