Ask the Rock: What is the Best Sand for My Horse Arena?
Apr 30, 2019 · You'll notice that WSDOT Class 2 Sand (9323) is the coarsest sand of the four, and Fine Mason Sand (9363) is the finest. Here are a few different sands that customers commonly use for horse arenas, with a description of their properties: A fine, washed sand that is commonly used on golf course fairways.