I haven't used that particular brand of play sand, and I don't keep axolotls, but I will say that many years ago I tried using play sand (from lowes I think) and it was extremely dirty. The amount of rinsing, and rinsing, and rinsing, that I had to do was NOT worth the amount of money I saved, now I just buy aquarium sand, the play sand was just waayyyyy too dirty. Just my experience though, I'll never use play sand again. Just be prepared to rinse it many many times if you use play sand.