4.4lb bag of Fluval Stratum. Substrate used for aquatic plants and shrimp, but great for rooting cuttings or germinating seeds! Your plants roots will take off in this media. Treat it as you would soil, let the it dry and turn a bit of a grey-ish ashy color, then rehydrate. Flush regularly to discourage algae and mineral buildup.
Fertilize using Dyna-Gro Foliage Pro