We were looking for a sand that was graded very specifically to a certain grain and also was of very high quality, in regards to the materials that weren’t in there. We just wanted sand, we didn’t want a lot of organic matter or things that would cause problems in the water. It’s a spectacular product. I’ve recommended their sand to a number of public aquariums and aquacultures. To be able to get sand that’s that type of grain, that certified organic and is the same every time, it makes our life easy.