Hello.
Thought I would share what I've used to mount my nanobox duo plus m led light to my reefer 170.
Initially since I was running my new nanobox in conjunction with my geisman t5 fixture, I had to custom make a custom bracket.. then decided to do Led only. And since my light setup had a hanging kit and not a gooseneck I had to find a tank mount fixture. Ended up with the AI hms single mount kit from bulk reef supply. Not perfect but works great. Basically just hung the light on the mount.
Here are some pics..