Clay Pebbles Hydroponic Growing Medium 4–8mm
Lightweight expanded clay pebbles for hydroponics and potting mixes, helping improve drainage and root aeration. Ideal for houseplants, cacti and succulents, keeping moisture balanced while reducing waterlogging.
Price range: £4.08 through £24.88
Product Details
These lightweight expanded clay pebbles are a versatile growing medium for hydroponic systems and container plants. Their porous structure supports healthy root development by improving airflow around the root zone while helping to manage moisture more evenly than dense soils.
Made from fired clay, each pebble forms a hard outer shell with a porous interior. This creates a stable, free-draining medium that won’t compact easily, making it suitable for repeated watering cycles and long-term use in pots and planters.
Use them on their own in many hydroponic setups, or mix into compost to open up heavy soil and reduce waterlogging. They’re also ideal as a drainage layer in the base of pots, or as a clean top dressing to help keep the surface tidy and reduce fungus gnat activity.
Suitable for a wide range of plants including houseplants, cacti and succulents, these clay pebbles are a practical choice for indoor growing, greenhouse use, and balcony planters. Select the bag volume to suit anything from a small repotting job to topping up multiple containers.
Additional information
| Weight | 100 g |
|---|---|
| Dimensions | 28 × 18 × 22 cm |
| Volume | 1 Litre, 2 Litres, 5 Litres, 10 Litres, 20 Litres, 50 Litres |
| Form | Round clay |
| Material | Fired clay (expanded clay) |
| Organic | Yes |
| Particle Size | 4–8mm |
| pH Value | 6.5 |
| Suitable For | Hydroponics, pot drainage, soil aeration |
| Brand | |
| Country of Origin |













