GROW!T Clay Pebbles | 10L Bag - 4mm to 16mm Pebbles

Aerated Drainage Medium for Hydroponic Root Zones, 10 L

A growing medium that stays waterlogged around the roots invites rot and starves roots of oxygen between waterings. GROW!T Clay Pebbles are kiln-fired at high heat into a porous, lightweight aggregate that drains freely while holding enough surface moisture and oxygen at the root zone to support healthy root development.

In a 10L bag, this size suits container growers and smaller ebb and flow or drip systems who need enough medium for a handful of containers without buying a larger commercial-volume bag.

Key Features & Benefits

• 4mm to 16mm pebble size — creates air pockets between pebbles for drainage and root-zone oxygen while still holding plants stable.
• Kiln-fired expanded clay — produces a lightweight, structurally stable aggregate that won't compact or break down like organic media over time.
• pH-neutral composition — won't shift reservoir or feeding solution pH the way some organic media can.
• Reusable across grow cycles — rinses clean between uses instead of requiring replacement after every harvest.
• 10L bag size — sized for container growers and smaller hydroponic systems.

Who Should Use GROW!T Clay Pebbles

Container growers and smaller hydroponic system operators who want an inert, reusable drainage medium instead of a soil-based or organic mix.

About GROW!T Growing Media

GROW!T produces hydroponic growing media designed for consistent, inert drainage performance across ebb and flow, drip, and hand-watered container systems.

Frequently Asked Questions

What are clay pebbles used for in hydroponics?

They serve as an inert growing medium that provides drainage and root-zone aeration in ebb and flow systems, drip setups, and hand-watered containers, replacing soil while still anchoring the root system.

Do clay pebbles need to be rinsed before use?

Yes, growers typically rinse clay pebbles before first use to remove dust and residue from the kiln-firing process, which also helps with initial water absorption.

Can clay pebbles be reused after a grow cycle?

Yes, clay pebbles can be rinsed clean and reused across multiple grow cycles since they don't break down like organic media, though growers running disease-sensitive operations may sterilize or replace them between cycles.

Why choose clay pebbles over rockwool or coco coir?

Clay pebbles offer more air space around the root zone than denser media like rockwool or coco, which suits systems that rely on frequent flood-and-drain or drip cycles rather than continuous moisture retention.

Do clay pebbles affect nutrient solution pH?

No, GROW!T Clay Pebbles are pH-neutral and inert, so they don't buffer or shift the pH of a feeding solution the way some organic media can.