Multi-Light RMS Radion Arm Kit - EcoTech Marine

The Multi-Light RMS Radion Arm Kit contains the two vertical support arms that form the backbone of EcoTech Marine's Multi-Light Radion Mounting System. These arms clamp to the tank and bear the load of the horizontal RMS Track, which in turn carries the slide-mounted Radion fixtures. Without this arm kit, the Multi-Light RMS cannot be assembled, making it the logical starting point when speccing out a new build or upgrading an existing Radion installation.

The arms are machined from anodized aluminum, striking a balance between structural rigidity and low overall weight. Integrated cable management channels keep power and data cabling organized along the mounting structure rather than draped across the canopy or tank rim. The design accommodates rimmed, rimless, and eurobraced aquarium styles, and the mounting hardware fits tank trim profiles up to 1-3/8" thick, covering the majority of commercially available glass and acrylic aquariums.

Once installed, the arms hold Radion fixtures at a fixed elevation of approximately 7 inches (18 cm) above the tank surface — a height that suits the spread characteristics of both XR15 and XR30 optics across a range of tank widths. Because the full Multi-Light RMS system accepts both XR15 and XR30 units on the same track, hobbyists running mixed fixture configurations do not need separate mounting hardware.

This kit covers only the arm component. A complete Multi-Light RMS installation requires three parts purchased separately: the RMS Arm Kit (this product), the RMS Track (the horizontal span piece), and the RMS Slides (the adjustable brackets that attach fixtures to the track). Plan all three components before ordering to ensure compatibility with your tank dimensions and lighting layout.