I just received this light for my tank on Friday. Very disappointed in the quality of the light fixture. The bulb connections are very poor and I had difficulty getting the lights to light. After much twisting of the bulbs in and out I finally got all four bulbs to light but not without sparks on one of the connection and then the unit starting to smoke and make crackling noises. As soon as I placed it on my tank the white bulbs went out again. After tinkering with them they came back on. Then the atinic bulbs went out. I decided that this light is a fire hazard and went back to my old light. I will be returning this light to the Seller. In addition, you have a separate plug for the fan on this light which I think is dumb. The fan should come on automatically with the light and go on a off with the heat of the light. Yes, this light was cheap but I once again, I got what I paid for. A piece of junk. I just wish there was a review from Amazon on this light so I would have known. So I am putting one on now for future buyers.