Thoughts on this light mounting setup

[Maximus52]

I have 2, 60 inch OR4 Orphek light bars and 3 Kessil a360we mounting over my tank. I have 3 old current USA tank mounts that are 1/8 inch thick steel that is 14 inches long that I want to attach to the wall into studs and then attach the Orphek fixing brackets to those. I’m looking at 30 inches from the wall holding about 28 pounds of weight total between the three arms. Is this too much weight? (about 9-10 pounds per arm) Will the 1/8 inches steel sag over time with this weight?

 

[JTP424]

Cantilever Beam Calculator

Static analysis of a cantilever beam for point and distributed loads. Bending moments, shear, deflections, slopes.

calcresource.com

Might be able to figure it out through this link!
Edit... Hmmm maybe not... sorry, too data delivered