Sdivad

PVA is heavier than water and settles to the bottom, PLA is lighter than water and floats to the top. After a print, I suspend the printed model and build plate upside down and just under the water line, in a bin just a little larger than the build plate. The build plate acts like a ceiling that holds the model under the water line until all PVA is disolved. Models extract easy if you let gravity do the work, and without the need for circulating water that can damage a delicate model.