I got two EcoTech Radion lights for Christmas from my wife to go on my 120 gal display. I had planned on another Aquastyle build for this tank, but her offer to get two of these for Christmas quickly changed those plans.
I like an open top, so I proceeded to figure out how to mount them and keep the open look. I settled on 1" aluminum tubing that is anodized black along with the matching nylon connectors.
I got a special metal cutting blade for my miter saw and cut all the pieces to fit.
I mounted the Radions directly to the tubing with 5M bolts and the entire fixture is rock solid with eight bolts running through the tubing and directly into the mounting ports on the lights (I also do not like the look of any hanging cables).
I just got the fixture up yesterday and still tweaking the programming. There is a natural mode and an artifical mode that you program via USB connector. The natural mode simulates the day cycle with a gradual ramping up of the lights from 6 am untl dark. You can change the cycle in any manner your choose. The artificial mode is completely programmable to any spectrum you want for any length of time. The Radions work in concert with each other via the wireless interface, so you only program one and it passes the programming to all the others. I also have them linked to my MP40's so you can actually start feed mode from the switches on top the Radion. The possibilities are endless and Ecotech has committed to continual upgrade to the programming interface.
I will post a complete review of the Radions after I have a couple of months of experience, but so far they look to be a great replacement for my TEK 8 bulb fixture which was eating $160 worth of bulbs every 6-8 months. All three of my tanks are now lit solely with LEDs. No more bulbs