Should have spent the time working at Min wage, then you could of had the Conduit pipe for for free, after taxes.............and the conduit can be bent to suit any tank, moved, attached with more variations, comes in 1/2, 3/4, 1" which is able to support the largest lights sold(I used 3/4 pipe for the 72" 70lb hood), and still cost about 10$ or so including mounting brackets/screws etc.
Some folks use the bender at the hardware store, or like at Lowes, they will bend it for you. The pipe is a mere 1-2$ per 10 ft.
Paint the pipe to suit.
I use the pipe's top bend to adjust the light back and forth very easily. The flexibility and ease of placement is better than any other design.
I like and prefer ceiling mounts, but they'd need to be on tracks to accomplish what this design does. (Both designs) Really makes working on the tank far easier. And for 10 $, immediate and local supply, 5X less cost, stronger support, hard to beat.