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Aqua Clay Pebbles 45 Liters CANNA is an expanded clay pebble substrate designed for indoor growing and recirculating hydroponic systems. It offers a stable structure, neutral pH , and excellent root aeration, facilitating precise watering and efficient drainage in professional cannabis growing substrates .

These pellets of baked expanded clay have a high pore volume that improves root oxygenation and prevents waterlogging. Being inorganic and with a neutral pH , they do not interfere with the nutrient solution; furthermore, the low salt content (approximate EC 0.3 ) minimizes fluctuations in the reservoir.
The 45L format with a fraction between 8–16 mm is suitable for growing tables, recirculating drip systems, hydroponic pots and as a drainage layer in mixtures with soil or coco.
The heterogeneous structure of Aqua Clay Pebbles 45 Liters CANNA facilitates firm rooting and excellent grip, key for vigorous plants in growth and flowering phases.
It works especially well in combination with CANNA Aqua Vega and CANNA Aqua Flores , alternating to Flores when the first buds appear in a 12/12 photoperiod. Before first use, it is advisable to rinse with water adjusted to pH 5.8 to remove dust and prevent clogging of drippers.
It can also be used as a drainage layer (3–4 cm) in pots to improve water runoff. The plastic container is 100% recyclable , designed for responsible growth.
Available at Hydroponics Blanes , a trusted online grow shop with discreet shipping throughout Spain.
In indoor growing setups, this granulated substrate provides constant aeration and rapid drainage, maintaining a stable water balance in recirculating systems. The 8–16 mm granule size reduces compaction, improves root distribution, and stabilizes the plant, both in grow tables and mesh pots. Its chemical inertness and neutral pH allow for precise nutrient adjustments for various fertilization programs.
It serves as the primary growing medium in recirculating hydroponics, as a drainage layer in soil or coco coir mixes, and as structural support for cuttings and mature plants. It facilitates frequent watering without root asphyxiation, provides surface area for gas exchange, and helps maintain a stable EC (electrical conductivity) in the system thanks to its low salt content.
These are special fired, inorganic clays with a neutral pH and low EC (~0.3) . With proper handling, they do not decompose, rot, or develop mold. Their internal porosity retains usable moisture between waterings, while the hard surface promotes oxygen circulation. Thanks to their consistent physical stability cycle after cycle, they are a standard substrate for high-performance cannabis cultivation .
Initial preparation: rinse thoroughly until the water runs clear, preferably with water adjusted to pH 5.8 .
In recirculating hydroponics: fill containers or tables, place mesh pots and program short and frequent waterings, monitoring EC and pH of the reservoir.
As drainage in soil/coconut: apply a bottom layer of 3–4 cm to improve drainage and oxygenation.
Recommended nutrition: Use CANNA Aqua Vega during growth and switch to CANNA Aqua Flowers at the start of flowering (first buds).
Maintenance: Check droppers, avoid accumulation of fines and, if reused, wash and disinfect before a new cycle.
The 45L format offers an excellent volume-to-performance ratio for indoor growing projects of varying sizes. Check availability and current offers at Hydroponics Blanes , with discreet shipping options and expert customer service.
Available at Hydroponics Blanes , a trusted online grow shop and grow shop in Spain. Fast service, technical advice, and logistics designed for irrigation and hydroponics supplies.
Aqua Clay Pebbles 45 Liters CANNA provides solid structure, constant aeration and reliable drainage in hydroponic systems and mixtures with soil or coco.
A lightweight, clean, and reusable medium that fits with modern fertilization plans and the Hydroponics Blanes philosophy: equipping indoor growing projects with effective cannabis substrates , expert technical support, discreet shipping , and a secure shopping experience in an online grow shop focused on performance and consistency.