Radion Mounting Question

Considering the Radion lights for a new tank. My big question is around mounting them. I have a vaulted ceiling so hanging is not a real option. I am looking at the single mounting arm versus the rail (also mounters to the tank). My plan would be to have 4 Radion XR30s on single arm or two rails of 4 XR15s (total of 8 between the two rails). Some reviews have been critical of the single arms as not stable and having issues with the clamp. Anyone have real world experience with either of these options?

Thank you for you assistance.

Upcoming Events

Sunday September 22, 2019
Fragtastic Show
12 to 4 pm
Leominster Eagles
456 Litchfield Street
Leominster, MA


Backwoods Reef
Acro Garden
Frag Freaks
Frank's Frags