Horticultural Clay Pebbles is a perfect choice for growing strong, healthy plants. They’re 100 percent clay, which fosters premium aeration and drainage, as well as excellent pH and EC stability. The pebbles are also pre-washed, to ensure better stability.

Expanded clay is a popular medium for both aquaponic and hydroponic gardening around the world. It is also known as Light Expanded Clay Aggregate, or LECA.

Expanded clay is the inert hydroponics substrate of choice for professionals. It provides stability and the pebble has an ideal surface for roots and beneficial bacteria. The porous structure has a high water capacity and is suitable for both flood & drain and top irrigation systems.

In aquaponic and hydroponic systems, soil is replaced by these natural clay pebbles, which are derived from a renewable and plentiful source (clay) so it is considered an ecologically sustainable medium. The clay is formed into pellets and then fired in rotary kilns at 1200Cº. This causes the clay to expand inside, like popcorn, and become porous.