* Non-evaporated water flowing down the plant growth media is recuperated, treated by special water treatment (that does not harm the living wall's plants), mixed with makeup water and repumped up to the top of the living wall.
During refilling in 2011, the water in the lake zone was aerated and destratified using twenty aeration towers that pumped an air/water mixture into the hypoxic water layer on the lake bottom and/or repumped oxygenated water from the euphotic zone into the deeper hypolimnion (Palcik et al.