Why not use the green Eheim flex hose with some nylon straps? Cut the intake and output tubes just under the waters surface, slip the flex hose over the tubing. Route the flex hose where you want it, securing it with suction cups. Then insert the spary bar and intake into the hose.
You can, also, get a translucent white plastic tubing at Home Depot or Lowes. You can just heat it over the stove to bend it in what ever shape you want, then drill it for the spray bar and buy a strainer that fits.
Just a couple of ideas.