I'm not sure what Preston is talking about. This does not bow at all and is very sturdy and feels well made overall. Prior to purchasing the 70.5 inch rail I was using singles and everyone knows that singles suck for the larger tanks because they bend too far forward and end up pointing more the the back of the tank than providing an even spread. This rail is a much better alternative I only wish I had bought it sooner.

I am using 40.5" MULTI-LIGHT RMS TRACK supported on either end by drilling a hole and mounting to two articulating arms in a corner. I have three Radion XR30 Gen2's mounted with 3 of the newer G5 Mounts. I have also added two 3D printed moonlight holders. RMS Track is sturdy enough to mount these 3, without any obvious issues. I would suspect that once you get over the 50" track that bowing would start to become apparent if suspended from the very ends (based on what I see with my 40" arm). The track looks nice, and Ecotech has made mounts for this, that are expensive for what they are BUT, they are all designed to work together and do look nice. I do wish the system allowed for removal of items without sliding all the way off the end. I have 5 things attached to mine and have to sequentially remove things to get them off of the track. With the finned side of the track opening up there is not a good way to clean them without taking everything down. I wish the Radion's had a plug at the light for servicing.

BRS is great and this review does NOT reflect their service. I ordered the 90.5" track to put over my 96" aquarium with 4 Radion XR30w Pro lights. The documentation states that this track can fit up to a 98" tank. I have everything put together and the track bows about 2" in the middle of the tank. I reached out to Ecotech support and this what they said, "Unfortunately, since the rail is 90.5'' long, and due to the weight of the Radions, there will be some bowing in the rail." Their tip is to make the screws are tight (obviously). This bowing takes away from the clean look that most of Ecotech brand offers. If you have a 6ft or larger tank, I would look at something else, you will not enjoy the way this looks.

Great system! It is easy to set up (but takes 2 people). You need the RMS arms, slide mount (for each light) and the RMS rail. It was a bit heavy for a 6' and 3 light system. Very sturdy

This the track is a great way to mount multiple Radions! It's easy to place the lights where you want them, and it's easy to adjust position after the fact any time you want. Unfortunately, you have to buy mounting brackets for each light you have, but the track system is convenient, effective, and aesthetically-pleasing. My only complaint is the way BRS ships the tracks. One end of the 80.5" track was slightly damaged (cosmetic; not enough to impair functionality or warrant a return) due to poor packing by BRS. Definitely not up to BRS's usual standards.