Teaching myself how to use media effectively (hopefully).  Anyone know how
to get rid of those striations without bumping the media interval up
rediculous amounts?  I also tried to get the light to reflect off the floor
with photons (is there a way other than photons?) but couldn't, is this
because it's atmospheric media?  Is there something I'm missing or how can
I get it to work?  Source code:

//+w800 +h800 Antialias=On Antialias_Threshold=0.3
// --------------------- Includes --------------------------- //
#include "finish.inc"     // Some basic finishes
#include "colors.inc"     // Standard Color definitions

// --------------------- Control Center --------------------- //
global_settings{
 ambient_light 0

 radiosity {
  pretrace_start 0.08
  pretrace_end   0.005
  count 400
  error_bound 0.1
  recursion_limit 1
 }
}

#default {
 texture {
  pigment {color rgb <0,1,0>}
   finish {ambient 0 diffuse 0.6}    //ambient 0.55
  }
}

// --------------------- Camera ----------------------------- //
#declare cl=<12,10,6>;
#declare la=<0,-1.6395/2,0>;
camera {
 up <0,1,0>
 right x*image_width/image_height
 location cl
 look_at la
}

// --------------------- Lights ----------------------------- //
light_source {
 0
 color White*2
 fade_distance 3
 fade_power 3
}

media{
 scattering { 4, .2 } //type 4
 density{spherical scale 10}
 intervals 30
}

sphere{0,50 pigment{Black} hollow}
/**************************************************************
 *                       Scene                                *
 **************************************************************/
#declare cylrad=1;
#declare cylstr=-.3;
#declare cylrot=48.5;
#declare cyllgn=7;

#declare cyltex=
 texture{
  pigment{Green}
 }
#declare sphtex=
 texture{
  pigment{Red}
 }

blob {
 threshold 0.6
 sphere { <0, 0, 0>, 4, 1 texture{sphtex}}

 cylinder { <0, -cyllgn, 0>,<0, cyllgn, 0> cylrad, cylstr texture{cyltex}}
 cylinder { <0, 0, -cyllgn>,<0, 0, cyllgn> cylrad, cylstr
  rotate <-26.56505117708,    0, 0> texture{cyltex}
 }
 cylinder { <0, 0, -cyllgn>,<0, 0, cyllgn> cylrad, cylstr
  rotate <-26.56505117708,  -72, 0> texture{cyltex}
 }
 cylinder { <0, 0, -cyllgn>,<0, 0, cyllgn> cylrad, cylstr
  rotate <-26.56505117708, -144, 0> texture{cyltex}
 }
 cylinder { <0, 0, -cyllgn>,<0, 0, cyllgn> cylrad, cylstr
  rotate <-26.56505117708, -216, 0> texture{cyltex}
 }
 cylinder { <0, 0, -cyllgn>,<0, 0, cyllgn> cylrad, cylstr
  rotate <-26.56505117708, -288, 0> texture{cyltex}
 }
 sturm
}

plane{y,-1.6395
 pigment{
  hexagon
  pigment{color rgb .000001}
  pigment{color rgb 1}
  pigment{color rgb .5}

  scale 1.5
 }
 finish{
  reflection {.5
   falloff 2
   metallic .2
  }
 }
}


As always, suggestions/criticisms are appreciated.

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