Students from Johnson County High School demonstrate their state-of-the-art hydroponic greenhouse growing setup, and share what they've learned about tomato and lettuce production, taking us through their process from setup to harvest.
A conductivity of 2000-2500 Siemens per metre? Surely, that many ions in the water would kill all the plants! Seawater is only 5 Siemens per metre.
Unless your conductivity meter actually measures resistivity, which is measured in Ohms by metre. Or if it's some kind of strange crackpot US customary unit for conductivity...
fuk that intro was waaaay too long, i hated this vid half way through.
marcjtdc 2 years ago 2
guess it should be miliSiemens
anazuka84 4 years ago
It's ok, it was just a commercial for some hippie magazine....
NoirMusic 4 years ago
A conductivity of 2000-2500 Siemens per metre? Surely, that many ions in the water would kill all the plants! Seawater is only 5 Siemens per metre.
Unless your conductivity meter actually measures resistivity, which is measured in Ohms by metre. Or if it's some kind of strange crackpot US customary unit for conductivity...
gschjetne 4 years ago