Clay pellets — also known as LECA (Lightweight Expanded Clay Aggregate) — are kiln-fired clay spheres with a porous internal structure and a hard, stable outer shell. pH neutral, chemically inert, and reusable indefinitely with proper cleaning, they create excellent drainage channels, prevent substrate compaction, and work as a standalone semi-hydroponic medium or a structural drainage layer beneath finer media.

Particle size 8–16mm. pH neutral. Sterile. Suitable for semi-hydroponic growing, passive hydroponics, drainage layers, and open-structure aroid substrate blends.