Clay Pebbles Hydroponic Growing Medium 8–16mm

These expanded clay pebbles are a clean, lightweight growing medium designed to improve drainage and airflow around plant roots. They help reduce waterlogging while supporting steady moisture, making them a reliable choice for healthier, more resilient plants.

Made from fired clay, the rounded, porous structure creates air pockets in the root zone and helps maintain a stable environment in pots and hydroponic systems. The pebbles are durable and weather-resistant, with a natural appearance suited to both indoor and outdoor planting.

Use them as a standalone hydroponic medium or mix into potting compost to open up heavy soils. They’re also useful as a base layer in containers to improve drainage, or as a decorative top layer to reduce splashing and help keep the surface tidy.

Suitable for common hydroponic methods such as deep water culture, drip systems, NFT and ebb-and-flow setups, as well as for potted plants on windowsills, balconies and in greenhouses. Choose the volume you need from the available options to match your project size.