Anybody know?

[plkdb]

What kind of sand quickrete is? It says its a silica sand, is this something you could use for the aquarium? Thats all the MSDS sheet says.

 

[plkdb]

Actually I just noticed on their website they have filter sand for pools, any thoughts on this? All the stores are closed now otherwise I`d investigate it tonight more. It says "Narrowly graded clean silica sand".