Expanded Clay Pebbles (LECA), 8–16mm Hydroponic Medium – 20L

Round 8–16mm expanded clay pebbles for hydroponics, indoor plants and free-draining pots.

Lightweight expanded clay aggregate (LECA) is made by firing natural clay into round, porous pebbles. They give plant roots inert structural support while draining very quickly, keeping the root zone well aired.

The pebbles are pH neutral and carry no nutrients, so you stay in full control of feeding. Use them on their own in hydroponic systems, mix them with other substrates, or use them as a drainage layer in pots.

Clay pebbles can be washed and reused, making them a long-lasting medium for a home growing setup.

• 100% natural lightweight expanded clay aggregate
• Consistent 8–16mm round pebbles
• Fast drainage and good root aeration
• Holds some moisture in its porous structure
• pH neutral with zero nutrient value
• Use alone or mixed with other substrates
• Washable and reusable

Brand: Orku (as stated by the supplier)
Material: Lightweight expanded clay aggregate (LECA)
Pebble size: 8–16mm, round
pH: Neutral
Nutrient value: None
Volume: 20L
Net weight: Approx. 8kg
Ships from: Australian supplier stock

• Hydroponic, aquaponic and wicking systems
• Indoor plants and semi-hydro setups
• Drainage layers in pots and planters
• Growing herbs and leafy greens indoors

Clay pebbles are one of the most durable growing media there is: they can be cleaned and reused season after season. That makes them a smart base for a long-term home hydroponic setup producing herbs and greens year-round.

• 20L expanded clay pebbles in resealable bags (net weight approx. 8kg)

Accessories or items shown in promotional imagery are not included unless listed above.

Rinse the clay pebbles before first use to remove dust from transport. In hydroponic systems, pre-soaking for a few hours helps them hold moisture from the start.

Clay pebbles are a growing medium only and contain no nutrients; feed plants with a suitable fertiliser or nutrient solution. They can be washed and reused. Store dry, out of reach of children and pets (small pebbles can be a choking hazard). Sizes, volumes and weights are approximate.