Hi,
I went with a water dissolution, well it wasn’t the best idea for the render time with all the glass shaders and particles 
, 4H render time for 6 sec video @ 256 samples, 50% of 720p…
My force field is inside the water and is turned off at some point once the particles take a nice shape. I also have added a wind force field inside the water to replicate the viscosity, particles should fall quicker in air than in water 
Hope you like it, cheers !