Description
CANNA Aqua Pebbles 45 Litre is a professional-grade expanded clay growing medium that we have been supplying to UK hydroponic growers since 2017. Manufactured by CANNA — one of Europe’s most trusted horticultural brands — Aqua Pebbles are kiln-fired clay balls engineered for consistent porosity, size uniformity and chemical neutrality. As a substrate for recirculating hydroponic systems — including flood and drain, DWC, dripper systems and NFT — clay pebbles are unmatched for oxygen retention, drainage characteristics and long-term reusability. The 45-litre bag provides a substantial supply for filling multiple large containers or a commercial-scale growing setup.
Why CANNA Aqua Pebbles Are the Professional’s Choice
Not all clay pebbles are equal. Cheaper brands vary significantly in size, surface texture and internal porosity — inconsistencies that translate into variable drainage rates, uneven air-to-water ratios and less predictable growing performance. CANNA Aqua Pebbles are manufactured to tight specifications: a consistent size range of 8–16mm, a smooth but microporous external surface that retains a thin film of nutrient solution between irrigation cycles, and a stable internal structure that doesn’t crumble or produce fines over repeated use cycles. Their chemical neutrality ensures no pH buffering issues — they don’t release calcium or alkaline compounds that would upset the careful pH management hydroponic growing demands. The 45-litre bag format is the most economical per-litre option for growers filling multiple large containers or commercial trays.
Preparation, Use and Reuse
Before first use, rinse thoroughly in clean water to remove dust, then soak in pH 5.5–6.0 water for 12–24 hours to pre-stabilise pH and saturate the porous structure. After each crop, wash in warm water, sterilise with dilute hydrogen peroxide or dedicated cleaning solution, rinse thoroughly and dry before reuse. CANNA Aqua Pebbles can be reused many times over with proper care between crops. Compatible with all leading nutrient ranges including CANNA Aqua, SHOGUN Hydro and Plagron Hydro series. Use with CANNA Rhizotonic or SHOGUN Katana Roots for optimal root development in clay pebble systems.





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