I use the original Blend, Last time I was at Blake's he was out so you may want to call first.
This is from the Rod's Food website in regards to the Coral Blend
Rod's Food CORAL blend is creating a little confusion. In our opinion, only about 15% of hobbyists should be using this blend. Although we feel it is a great product for the right applications, most hobbyists should be using Rod's Food Original Blend.