When I had my 125 up and running, I used the gravel from my local Home Improvement Store. It was only about $3.00 per 50# bag. It did not seem to hurt any of the fish I had.
Now that I am getting my supplies ready for my soon to arrive 55, should I just go get another bag or so of the same Pea Gravel, or should I stay with my LFS and pay the $16 + per bag? Is there really any kind of difference between a bag of gravel from the LFS and a home improvement store?