The single best lower back pain treatment you can do is something called Foundation Training by Dr. Eric Goodman. Another poster, Effort, put me onto this and I've had no lower back pain for months after dealing with it to varying degrees for a few years now thanks to deadlifts, squats and other heavy lifts...
As he says at the end of the video, "Do this everyday and you'll have no lower back pain ever". And its pretty much true.
Anyone dealing with lower back pain or issues should be doing this daily in the morning, it takes about 12 minutes, and its surprisingly intense...
It retrains your body to use its posterior chain properly and really stretches out the muscles that can get compressed and shortened from sitting a lot and poor posture most people have...