irrigation (part 2) water trickling system connected to hose

The idea: a 13mm pipe connected to a hose (which then connects to either the mains or water tank tap) runs the length of a narrow garden bed, and 4mm flex tubes with trickler heads on a stake run off of it. These trickler heads can be placed at any interval along the 13mm pipe, and the stakes can be placed (and later adjusted) at the base of plants, where necessary. 

At the tap (mains or water tank), a timer can automate the watering to a certain extent. The benefits of this system is its flexibility. The crops can be rotated, and the stakes and tricklers can be moved around accordingly.