Maintenance
As the vegetables grow, periodically add nutrient solution to the milk cartons so that the cartons remains about 1/4 full.
Some of the roots that emerge from the Oasis cube will remain in the air above the nutrient solution surface to absorb oxygen (they are called "oxygen roots"). Other roots will remain in the nutrient solution and absorb water and nutrients (they are called "water roots"). (The figure to the left is from the additional reading Kratky, B.A., 2010). |