Great Lakes Water Only is an all-natural start-to-finish soil. This living soil is water-only. From seed or clone until harvest， our patented blend of worm castings， steer manure， and chicken compost， along with our incredible list of high-quality amendments. patented blend of worm castings， steer manure， and chicken compost， along with our incredible list of high-quality amendments creates plant-available food at each stage of development. The intended purpose of our soil is growing vigorous plants as a stand alone medium or in addition to existing soil both in indoor or outdoor containers or bedded plants. Great Lakes Water Only soil works alone or in conjunction with organic additives. Important Note: Do not use synthetic nutrients with Great lakes Water Only Soil. Garden Soil Imported Your security is our number one concern