Sand

[ScoutCarcer]

How long does it take for and to settle down on the bottom a tank?

 

[GSD]

it depends how well you wash it.It can take anything from a few hours to afew days!good luck,id there fish in the tank already?

 

[ScoutCarcer]

Its my crayfish tank. I put them in a bucket.

 

[LoachLover]

If you washed it a lot it should only take a day or so, otherwise it could take a week or two.