Wicking Balcony Garden

Here is my attempt at 2 raised wicking beds.

looks interesting,
whats the exact idea behind this construction. I know the term 'wicking bed' from Colin Austin (www.waterright.com.au), but your approach looks pretty specific. How is your bed meant to work?

So my plan is to cover the plastic piping with an old bed sheet. I then will poke an overflow hole right above the pipes. The pipe that is vertical will then be filled with water, it will flood the plastic tunnel and then wick through the bed sheet into the soil. You now have a 30 liter water reservoir so that you can water much less often.

Updated photos. It took so much water! maybe 80 liters

First a rubber liner, then plastic pipe, bed sheets, then some sticks, compost and then soil. There is an overflow hole at the top of the plastic pipe for the water to exit.

Here is a couple of pics! The owner kept saying her potted plants kept drying out. This one she only has to water every month or so....