Hello, I'm setting up a 112 gallon aquarium and looked for some cheap sand. Got it at Burnco and washed it a few times before putting it in the aquarium. I had to wash it well since I had it outside and saw lots of cat paw prints in it after I bought it! Even with a filter running for about a day, the water was still muddy so I took it all out. Maybe I'll try washing it in the bathtub. It's going to be too cold to wash it outside.