Arg! I left out the fact that I had also changed the sky_sphere to:

sky_sphere {
 pigment {
  gradient y
  color_map {
   [0 color  rgb .75]
   [.5 color  rgb 1]
   [1 color  rgb .75]
  }
 }
}

And added a normal to the elox texture:

 normal {bumps 0.05 scale 0.01} // just to have one present

And.... your reflection with falloff 4 didn't make sense to me without a
variation from min to max:

 reflection {0.01, 0.1  falloff 4}

I think I'm done now  :-)

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