Is These Sands Ok

[bichir mad]

after having gravel for 9months i need a change, and decided to do sand so after trawling the net i come up with this, would they be ok scroll down to bottom of page
http/www.womersleys.co.uk/acatalog/Build...oducts_1_1.html

 

[DarkEntity]

Ive used Argos playsand for about 2.50 per 25KG bag