(Spoilers) Help with area under pyramid.

I've managed to make it through the puzzles using the sun to find the correct spokes, all the way down to the lower area where you have to raise and lower the water to see the right reflections. There seems to be one last puzzle that's a 5x2 square which is different from all the rest, and I've changed the water level about 200 times but can't figure this out. The lines are reversed and no matter where I look I can only see light reflecting off the 3 middle panels, I am completely stuck even though the rest of the puzzles fell pretty quickly.

Help!