DTube VIDEO:
This setup is called the Kratky method
no electricity, no pumps, no moving parts.
Materials:
used non transparent jar - free
used plastic bottle with big cap - free
stone wool - free (leftover from flower shop, I just asked politely)
I paid only for the fertilizer. I used 3ml of 500ml bottle or 0.04$ for the project
My favorite Swiss Army Knives for Urban EDC:
Victorinox Cadet
Victorinox Waiter
My youtube channel :
http://www.youtube.com/c/Nomadics
► Watch on DTube
► Watch Source (IPFS)