I have had 2 dm 155e leds for about 1 month now and have had many problems not just the CHINESE lights but the service. First the fan stoped working days after i got them. Now the blue lights go on and off at random. I bought the stands for them but they were a joke, didnt fit my common 55 gal tank and looked like they were made for somthing else. They are cheap with cheap paint. So i mailed them back 2 weeks ago and now cant get a refund , actually i cant get anyone to answer my mess.,phone call, email or anything!! I left a message on there facebook page and it was deleted right away. So that answers the question why you dont see any negative comments on these lights. SO now i have a light that doesnt work right and it seems sincethey have my money now they have forgotten me. There were other problems too but the point is they are not as great as everyone says. SO BEWARE!!!! And now my corals suffer!! That really makes me sad. Where are you now Rick?