I have a Viparspectra 165W that has been working great. I had been hanging it from the ceiling which worked great at my parents house, but I just moved and am wanting to get an arm mounted light for my 32g cube, so I don't have to drill holes in the ceiling for hooks at the place I'm renting. I'm looking for something comparable with an arm mount that can go on the back of the tank! Thanks for any advice or input. Or honestly if someone knows of a way to easily mount my current light I'll take that too!