ive always just used a normal small bag of organic rooting soil so it will have a small amount of nutes in it i guess...i think my success in cloning came from following these guidelines...cut the branch then in a bowl of water make a diagonal cut as you would on a flower, this must be done under water, also while under water scrape the "skin" outside layer of the plant with your razorblade about a half inch up the stalk and dip and spin in cloning powder which you poured out of the bottle and throw away what you dont use then directly into dirt and in a 10 gallon tank with seran wrap over the top and a compact flouro about 6 inches over the top mist daily....hope that helps