Just make sure you pay attention to what grit you get. The one I got mine from had everything labeled as fine, and whom ever marked the bags at the factory put a check mark thru two of the boxes. I ended up grabbing the super fine stuff that is like fine salt. I think I lost more than half of what I rinsed, it washed right out.
I ended up grabbing 20/40 as well. I think the first time I was there, they only had the super fine. some always spills out of the bag, so it's easy enough to compare the grains to see what you like better.
The 20/40 is slightly smaller than #1 filter sand. It is a little easier to deal with.
Altho, with a smaller tank and shrimp, I kind of like the smaller grain. Not sure which will hold the ground features in the tank better over the long run. I think that would be more of a determining factor for me.