After 2 days researching, I opted NOT to deal with play sand from the Depot...I went with the brown bag/green writing silica sand... 100lb bag for $7.25 +tax. 2-3 minutes after adding the sand to a half full tank 95% of the debris had settled, one tank drain, and refilled to desired level... 1/5- 2" thick in my standard 90 gallon and it looks awesome! Bright and 'Chuck', my rescued fancy tail goldfish from my pond(long story) thinks it's just fine! (doesn't like me much though! haha)