Leca Clay 8-16mm – Inert Hydroponic Growing Medium
Lightweight Expanded Clay Aggregate for Hydroponics and Drainage
LECA (Lightweight Expanded Clay Aggregate) are baked clay pebbles, porous on the inside and hard on the outside. The 8-16mm size is perfectly balanced to provide exceptional aeration to the root zone while simultaneously wicking and holding a stable amount of moisture. It is inert, pH-neutral, and will not break down, making it an excellent, reusable choice for hydroponic and semi-hydro systems, or as a drainage layer in potted plants.
Key Benefits
- Superior aeration and oxygen supply to roots, preventing rot.
- Inert and pH-neutral, maintaining the stability of your nutrient solution.
- Highly reusable and durable; can be cleaned and sterilized between uses.
- Excellent wicking action for passive hydroponic setups.
Composition & Specs
- Material: Baked and expanded clay.
- Size: 8mm to 16mm diameter.
- Application: DWC, Ebb and Flow, Semi-hydroponics, drainage layer.
Usage Tips
- Always rinse the clay pebbles thoroughly before first use to remove dust.
- Soak overnight to ensure maximum water absorption prior to planting.
- Use to fill hydroponic nets pots in recirculating systems.
LECA is the long-lasting, reliable medium for advanced hydroponic root health and stability.

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