Roger Hiorns - Seizure (2008)
A condemned London apartment transformed into a copper sulphate chamber.
"After reinforcing the walls and ceiling and covering them in plastic sheeting, 80,000 litres of a copper sulphate solution were poured in from a hole in the ceiling. After a few weeks the temperature of the solution fell and the crystals began to grow. The remaining liquid was pumped back out and sent for special chemical recycling."