And some sand can be used safely for your CPs but some needs some washing and sand washing is tiring to me atleast.
heres an easy way to wash sand.
What You Need:
1.Styrofoam Cup or styro bowl packet or so..
4.Water of course!!
fill desire amount of sand in the cup
Make small holes around the cup.
Fill the cup filled sand with water and water drains out.Do it repeatly until you think the sand is clean and ...clean of course!
If u have lots of sand to wash with only such small cup,go get many more cups and fill them with sand,poke holes and water!!!
Thats all i guess