Would using a few of these on a grow box give enough light for pot plants?
Its in Spanish, so I'll explain a bit, the bottles are filled with clean water and two caps full of Clorox, the black film bottle is to cover the bottle cap from the sun. When they were measuring the light output they said it was equivalent to a 40 to 60 watt bulb.
So, would installing a few of these allow plants to grow in a box?
Has this been tried before with no success?
Heres the video:
Here is with english caption: