This is a delightful, 8½ minute video on the use of various discarded plastic trash to successfully grow hydroponic vegetables in a Syrian refugee camp in the desert.
www.bbc.com
What they don't discuss is addition of any nutrients to the system.
Bob

How mattresses could solve hunger
Refugees in Jordan and scientists from the UK are growing fresh food using old mattresses.

What they don't discuss is addition of any nutrients to the system.
Bob