, also referred to as leca clay pebbles, is made of a highly versatile clay substrate一Hydroton. It is a lightweightsmall bubbles forming during heating producing a honeycomb structure. LECA has an approximately round or potatoThey're suitable for both aquaponic and hydroponic systems and their size and composition make them easy to handle◆Horticulture Expanded Clay are irregular size and will not all be the same shape or size
◆This clay is not machined into round sphere shape but is in its natural form in pebbles
use to get rid of dust.
