Sand question?

[C&C]

My friend is looking at setting up a reef tank, after seeing all the fun that me and my wife have been having ( He does have some previous experience, the bug has bitten again). We have read on other groups about using a kids play sand from home depot for the DSB. Since We live in Newbrunswick we don't have Home depot :( I have found play sand from the Shaw group, says that it is salt free but not what it is made out of? Any ideas? Or anybody know where I can get some of this much cheaper sand or who makes it?

C&C