I spent way too much time looking for sand just a few weeks ago. I actually bought sand, cleaned it, put it in the tank then decided I didn't like it , took it out, bought new sand and started all over again. One problem I discovered is that sand supply is different depending on what region you live in. So if someone bought sand A and you go and buy sand A it may not be the same. Also, sand has its own terminology that can be confusing at first. What I ended up doing was going to a landscaping center and they actually had sample bags of their different sand. That really helped because its hard to know what you want when you don't have anything to compare it too. I don't have any pictures yet, but the sand I first bought was a quickrete 30mesh sand (I got it at lowes). Sand mesh refers to the grain size - the larger the mesh the finer the sane. This was the sand I ended up removing because it was so fine. In the past I have used the quickrete play sand (also at lowes) and I like that but it does not have a uniform grain size, and the color of the sand is more variable (it tends to look a little darker than most). The sand I ended up with was sand blasting sand which is 16mesh sand. That grain size is a good size for a tank with pumps and filters. It is not easy to stir up and when it does it falls right down.