I realize the difference between pipe and tube.
Pipe has a seam whereas tube does not.
Although the diameter is slightly different it's very close and the wall thickness is similar. So the bender I have should work. It's just difficult with the size of tubing I have. Or anything larger for that matter.
As for a Mandrel bender those are nice and all. But according to a source they are about 275,000 dollars for a used one. So thats not really reasonable. And the nearest shop with one is several hours drive from here.
I'm just going to try the sand filled method and see what luck I have.