The distances will range from 5-25 feet. Any sixed rubber band is allowed. It must have a standard sized paper clip attached to it. It can be no bigger that 2ft by 2ft by 2ft. The rubber band must hit the target accuratly. The target will be placed on the floor.
Of course. That is why grow rooms are often lined with mylar or other reflective materials.
They are exhaust hoses. They attach to the trucks with a magnet or with an electrical release. When the truck pulls out, they ride along with the truck until it reaches the door and then they detach. OSHA regs are requiring that diesel exhaust be vented outside, so it doesn't build up in the crew's office and living areas.
