How to Make Hydroponics Clay Pebbles at Home [LECA,
Lightweight Expanded Clay Aggregate () often referred to Hydroton or clay pebbles consist of balls of clay that has been superheated (in a rotary kiln) from anywhere between 1100 to over 2000#176; process causes popping, which creates the pebbles characteristic pores. These pores, in addition to the spaces between pebbles, make Hydroton a light and airy growing medium that