So here’s how I made my light bars to hang my lights above my aquarium:
Shopping list (this is to make two bars to hang a 48″ lighting fixture)
2 -10′ lengths of 3/4 conduit pipe (get a 3rd because you’ll make mistakes on bending)
2 - sets of “Sunlifts” from sunlight supply (http://www.marinedepot.com/ps_ViewIt…915~tab~2.html) Got mine from SWI much cheaper
4- 1″ hooks
4- Decorative nuts (got mine from a current light fixture set, but I’m sure they sell something like it at HD)
4- 3/4 brackets for attaching to the wall or stand
1- Bag of end caps (1/2″) see picture for type **optional**
Screws for mounting to the wall/stand
Tools-
Drill
3/4 Pipe bender ($40 @ HD) –gonna return mine 

Pipe Cutter
To make these light bars I needed them to hang a 14″ light fixture 16″ over a tank. (I chose to hang it slightly closer to the front of the tank)

Measure Twice, Cut Once
I measured 18″ to start my first bend. That gives me 2″ extra on each side of my fixture of dead space.

If you’ve never worked with a pipe bender before, you have to line up the little star with your line.

Bend your first 90 degree angle by stepping on the pedal and forcing it up.

I needed my light bar to extend 15-16″ out from the wall.. so I made my next mark 12″ from the top of the perpendicular pipe. Bending with the 3/4 in pipe bender adds about 4″ extra to the finished bend. Thus a 12″ mark becomes 16″ finished product.

Bend your second 90 the same way as the first.

Cut the excess length off the foot of your pipe. I cut 7.5″ off the end for my purposes.

Drill holes straight through the pipe to screw in the hooks

I finished mine off with a decorative nut, but any nut will do.

I went the extra step and capped the pipe for a finished look. This is the bag for these caps…Notice they are 1/2 to fit inside the 3/4 pipe.



This is what the final close up of the hangers look like

My pipes sit on the floor behind my tank because I couldn’t access behind my stand to attach them to the stand (my first choice) so I attached them to the wall

Final Product

Update with the 48″ light fixture I use now