yeah pool supply shops are you're best bet, but from what i've read you guys in the states can also pick it up from hardware stores.
thanks for the pictures TRENT - i'm going to start cleaning my sand tonight, your images look great btw!
I hope this thread clarifies the pool filter sand as substrate question for everyone.
Benefits:
1. Cheap price.
2. Coarser than other sands making it easier to clean.
3. Less likely to get sucked up by canister filters/gravel vac's.
4. Once again - CHEAP price!
Also that it is safe to use as substrate and it does have funky warning labels that shouldn't really affect you using it as an aquarium substrate.