You know Dennis, I have tried every type of salt out there, over the years. Coral Pro, Tropic Marine, Reef Crystals, etc.......(when I worked at the LFS, I got the high end stuff really cheap). I can honestly say, I couldn't tell that much of a difference with coral growth. Would I use that stuff if it were given to me or just as cheap as coralife or instant ocean? You bet I would but I won't pay extra for them. I really am glad you like it though.