If you keep the area, settling itself. It takes about 10 days, so if you do, the Commander of the colloid to congregate together in large chunks. Called flok (Floc) is capable of settling quickly and easier.
If it is left to settle itself. It takes about 10 days if the colloidal particles grouped together into larger clumps called Flock (Floc) to precipitate faster and easier.
If set to leave to precipitation, takes about 10 day, so if the colloid particles was gathering together a large. Called the flock (Floc) can precipitate faster and easier.