Anyone know concrete mix design?

[brainanator]

It appears you are very right....guess the name blue metal is misleading....haha. I will for sure look into it for out fine-med aggregate. Thanks for the info! Guess they would sell that stuff a hardware/home improvement store eh? Will have to call around, I hope they sell it in something smaller than 1000lb bags for these 3 2" cubes, haha.