I've heard that turface MVP is a good cheap substrate for planted tank aquariums and I think I found a branch of John Deere that carries it close by. However, when I called them, the person on the line was not very clear about what they offered. I think he said that they have turface ALL-SPORT MVP which they're selling in 50 lb bags for $20. Is this the same stuff? If I drive over there, what are some easy ways I can tell just by looking at the bag? If it is the right product, what are the different colors it could other than grey?