GROW!T - Clay Pebbles

GROW!T Clay Pebbles are a durable, reusable expanded clay growing medium for hydroponics, aquaponics, semi-hydroponics, houseplants, orchids, and other soilless growing applications.

These are our replacement for the product we commonly referred to as “small ball Hydroton.” Depending on who you ask, this type of growing media may also be called LECA, LECA balls, clay pebbles, clay balls, expanded clay pellets, hydroponic pebbles, expanded clay aggregate, or Hydroton-style media.

Made from 100% natural clay, the pebbles are expanded into lightweight, porous balls that provide excellent drainage and air space around plant roots. They are highly stable in both pH and EC, making them well suited to recirculating hydroponic systems and other applications where a clean, inert growing medium is preferred.

Features

• 4–16 mm pebble size

• Made from 100% natural expanded clay

• Pre-washed to reduce clay dust

• Stable in pH and EC

• Provides excellent root-zone aeration

• Drains freely without holding excessive water

• Strong structure helps resist crushing and compaction

• Reusable when properly cleaned and sanitized

• Suitable as a complete soilless growing medium or as an amendment to improve drainage and aeration

Suitable For

GROW!T Clay Pebbles can be used in a wide range of growing systems, including:

• Hydroponics

• Aquaponics

• Semi-hydro and passive hydroponics

• Flood and drain / ebb and flow systems

• Deep water culture (DWC)

• Drip irrigation systems

• Multi-pot hydroponic systems

• Dutch buckets

• Net pots and net cups

• Aquaponic grow beds

• Plant propagation

• Orchids, Monstera, Philodendron and other houseplants

The open spaces between the clay pebbles allow excess water to drain away while maintaining plenty of oxygen around the roots. Their porous surface can also retain a small amount of moisture without becoming waterlogged.

Clay pebbles can also be mixed with coco coir, potting soil, orchid mixes and other growing media to improve drainage, structure and root-zone aeration.

Because the pebbles maintain their shape well, they are less likely to break down and compact than softer growing media. This makes them particularly useful in drip-fed and recirculating hydroponic systems, where loose or degraded media can contribute to clogged irrigation lines and drippers.

Rinse Before Use

Although GROW!T Clay Pebbles are pre-washed, we recommend giving them another thorough rinse before use. This removes any remaining clay dust, particularly when they are being used in hydroponic reservoirs, aquaponic systems or clear containers.

Clay Pebbles vs. Lava Rock

These are frequently mistaken for lava rock, but they are not lava rock. GROW!T Clay Pebbles are manufactured from expanded clay specifically for use as a porous, inert growing medium.

Also Known As

If you are looking for LECA for plants, Hydroton, hydroponic clay balls, expanded clay aggregate, expanded clay pellets, clay pebbles for hydroponics, or reusable hydroponic growing media, this is the type of product you are looking for.

Formerly sold as PLANT!T Clay Pebbles.

Important safety information: Do not step on them in bare feet. It hurts. Not quite as badly as LEGO, but close.