Just wanted to update you guys so you don't have to go out there and test all of them.
I tested three sands from Home Depot and here is my bubble report
Pool Filter Sand - No Fizz - Pure Silica
Quikcrete All Purpose Play Sand - Fizzes - Mixture of Silica and Argonite
General Play Sand - Fizzes - Mixture of Silica and Argonite
The quikcrete did have a finer grit than the general play sand... I forget the name of it but it is more colorful on the bag and has some flags on it.
I think I'm going to buy 100 lbs of quikcrete all purpose sand and wash it up.. use it in my 120 gallon reef.