<b>Specification</b><br>- weight : 4.4lb<br><br><b>Features</b><br>The expanded clay pebbles made from natural clay have strong structure and no pungent odor.<br>The expanded clay pebbles have small voids on the surface and inside, which can store water, air and nutrients, and release when your plants need them.<br>These expanded clay pebbles can be soaked overnight for hydroponic plants, or used as top dressing or mixed into the soil to loosen the soil and maintain aeration.<br>These expanded clay pebbles can be widely used in hydroponic gardening, deep-water aquaculture and hydroelectric power generation systems, drip irrigation systems, etc.<br>