Aside from specific, occasional sessions where I combine diamonds and SG,I usually leave the water trough to rest for a day, on the lowest position. This allows for the wheel to release the water it absorbed, and for the slurry to sediment on the bottom.
Afterwards I empty the (mostly clear) water in the sink, and the wet (yet compact) slurry goes to the trash.
Afterwards I empty the (mostly clear) water in the sink, and the wet (yet compact) slurry goes to the trash.