It may be they stopped producing the grey play sand. I bought mine from the Home Depot outlet in Port Coquitlam, BC, and on the bags it reads PLAY SAND in capitals, and the bags look identical to the photo I linked for you in post #19 . If they put different sand in these bags, I wouldn't know; all bags were the same, and the sand appears the same.
I had 8 tanks running in those days, and I keep a record of changes to the tanks and these show the change to play sand in the 115g in August 2011, the 90g in August 2015, the 70g in February 2013 (this tank had Flourite for two years prior to this), the 40g in May 2016 (as a new tank), the 33g in March 2011, a 29g in March 2012 and a second 29g in May 2016.
