Anybody have some seeded matrix from an established tank that they would be willing to exchange for some fresh matrix. I need approx. enough to fill a large McDonalds cup. I will in-turn give you the same amount (if not a little more) back in fresh matrix. Need it for my new Nano tank since I am not going to be adding a large amount of rock. I am in the Alpharetta area during work week, and Canton in the evenings and on weekends.