CANNA Aqua Clay Pebbles 20L
CANNA Aqua Clay Pebbles 20L are baked clay pellets designed for hydroponic growing, offering a stable, airy root zone and dependable moisture management in recirculating systems.
- ✔ 20L bag of baked clay pebbles for hydroponic use
- ✔ High porosity and air content help support strong root development
- ✔ Low soluble salt content makes them well suited to closed systems
- ✔ Inorganic growing media with a neutral pH value
- ✔ Fungus free, resistant to rot and suitable for repeated hydroponic applications
- ✔ Ideal for growers who want close control of nutrients and humidity around the root zone
£10.00 incl. Vat
5 in stock
🌱 CANNA Aqua Clay Pebbles 20L — Guide and Product Information
CANNA Aqua Clay Pebbles 20L are baked clay pellets developed for hydroponic cultivation where control, drainage and oxygen around the root zone matter. They are made from selected types of clay with a low soluble salt content, making them especially suitable for closed hydroponic systems.
As a reliable hydroponic substrate, these clay pebbles help create a balanced environment around the roots, supporting healthy plant establishment and consistent crop management. For growers browsing more substrates, see our Growing Media and Hydroponic Media ranges.
🌿 Why choose CANNA Aqua Clay Pebbles?
One of the main advantages of CANNA Aqua Clay Pebbles is their combination of high porosity and high air content. This structure helps roots access oxygen while still retaining useful moisture around the root zone. Strong, well-aerated roots can grip the substrate effectively, which supports vigorous plant development through both vegetative growth and flowering.
- ✔ Designed for hydroponic growing systems
- ✔ Encourages a well-oxygenated root environment
- ✔ Helps growers manage nutrient delivery accurately
- ✔ Supports moisture balance around the roots
- ✔ Suitable for experienced growers using recirculating setups
🧪 Media features and practical performance
These clay pellets are inorganic, have a neutral pH value, are fungus free and do not rot. That makes them a practical choice for growers who want a clean, stable growing medium that integrates well into hydroponic systems without the breakdown associated with some organic substrates.
The low soluble salt content is particularly important in closed systems, where nutrient solution is recirculated. A cleaner substrate helps maintain better control over nutrient strength and root zone conditions.
🏡 Suitable applications
CANNA Aqua Clay Pebbles are best suited to hydroponic cultivation, especially where growers want close control over feeding and humidity in the root area. They are commonly used in recirculating and closed irrigation systems, net pots, flood and drain setups, and other hydro applications where free drainage and oxygenation are important.
If you are comparing media for propagation or other growing styles, you may also want to look at Root Riot 24 Tray for starting young plants or Canna Coco Professional Plus if you prefer a coco-based medium.
🔗 Related growing advice and compatible products
For best results, CANNA states that Aqua Clay Pebbles perform especially well when used with CANNA Aqua nutrients through the full cultivation cycle, such as Aqua Vega and Aqua Flores.
Good environmental control also supports better root performance in hydroponics. For more advice, read our guide to the role of grow lighting in hydroponics. If you are running your crop in an enclosed space, our article on proper ventilation in a grow tent is also useful.
📋 Technical Specifications
Product: CANNA Aqua Clay Pebbles 20L
Product Type: Hydroponic growing media
Category: Growing Media, Hydroponic Media
Brand: CANNA
Bag Size: 20L
Material: Baked clay pellets
pH: Neutral pH value
Use: Hydroponic cultivation
Application: Particularly suited to closed hydroponic cultivation systems
Key Media Traits: High porosity, high air content, low soluble salt content, inorganic, fungus free, does not rot
🎯 Ideal Uses
- ✔ Closed and recirculating hydroponic systems
- ✔ Growers wanting strong drainage and root-zone aeration
- ✔ Cultivation where precise nutrient control is important
- ✔ Use through vegetative growth and flowering
🛠️ Setup and Usage Tips
Before use, rinse clay pebbles thoroughly to remove loose dust and prepare the media for your system. Make sure irrigation frequency matches the needs of your plants, system design and environmental conditions, as clay pebbles provide high air content and fast drainage.
Monitor nutrient strength, pH and root moisture consistently, particularly in closed systems where solution is recirculated. Pairing the media with a hydroponic nutrient programme intended for aqua systems can help keep feeding straightforward and consistent.
Stable temperatures, good airflow and suitable lighting all contribute to better root health and plant performance. If humidity control is a challenge, our guide on preventing mould and mildew in your grow tent is worth reading.
❓ Frequently Asked Questions
What are CANNA Aqua Clay Pebbles used for?
They are used as a hydroponic growing medium, especially in systems where good drainage, high oxygen levels around the roots and controlled nutrient application are important.
Are these clay pebbles suitable for closed hydroponic systems?
Yes. CANNA Aqua Clay Pebbles are made from special clay types with a low soluble salt content, which makes them particularly suited to closed hydroponic cultivation systems.
Do CANNA Aqua Clay Pebbles have a neutral pH?
Yes. According to the product information, they are inorganic and have a neutral pH value, helping provide a stable base for hydroponic feeding programmes.
Do the pebbles rot or support fungus growth?
No. These clay pebbles are fungus free, inorganic and do not rot, making them a dependable medium for hydroponic environments.
Should I rinse the pebbles before use?
It is good practice to rinse clay pebbles before placing them into your system to remove any loose dust and help keep the system cleaner during setup.
Which nutrients are recommended with this media?
CANNA states that Aqua Clay Pebbles give the highest yield when used in combination with CANNA Aqua Vega and Aqua Flores nutrients.

