After almost a year I finally figured out why my first fish tank had ammonia in it even though it only had driftwood, rocks, plants, and soil. I think this is also pretty important information. "ADA - Aqua Soil ''Amazonia'' ADA substrates are designed to release ammonia as an aid in cycling new filter media. This is in effect "fishless cycling" and is of great benefit to livestock when they are eventually added to the tank. Because of this livestock should not be added for at least three weeks and we reccomend that a large 70% water change be carried out weekly during this period. Planting will also be easier at this point as plants too do not appreciate high ammonia levels"