Best Gardening Soils, We strongly recommend you with Hydrorock 8-Quart Soil Enhancer.

Hydrorock 8-quart clay pebble soil enhancer.

Hydrorock is a clay pebble capable of holding water for a long period of time; thereby becoming a source of nutrients for plants.

Hydrorock is clean and safe for hydroponics systems.

Hydrorock can also be reused; as they do not decompose.