Description
Canna Coco A or B 10 Litre is a single part of Canna’s industry-leading two-part coco nutrient system, providing the complete macro and micronutrient formula for growing in coco coir substrate in the largest available single-part bottle size. We have been recommending Canna Coco A&B to UK growers since 2017 as one of the most trusted and consistently high-performing coco nutrient systems available — Canna’s Dutch formulation expertise and their deep understanding of coco coir’s unique nutritional chemistry have made Canna Coco A&B the reference product against which other coco nutrients are measured.
Why Canna Coco A&B Is the Reference Standard for Coco Nutrition
Coco coir has a unique chemistry compared to soil or inert hydroponic media. Its high cation exchange capacity binds calcium and magnesium preferentially, making nutrients formulated for other growing media consistently underperform in coco. Canna developed their Coco A&B formulation specifically for coco coir’s ionic behaviour, providing elevated calcium availability, optimised calcium-to-magnesium ratios, and a micronutrient chelation strategy designed for the pH range and buffering capacity of coco. The result is a system that consistently delivers deficiency-free, vigorous growth in coco from seedling through to harvest — with none of the calcium and magnesium problems that plague growers using soil or hydroponic nutrients in coco. The two-part system keeps chemically incompatible nutrients (particularly calcium and sulphate/phosphate) separated until dilution in the reservoir, preventing precipitation reactions that reduce the availability of these elements in the finished nutrient solution. The 10-litre bottle provides a cost-effective supply for high-volume or commercial coco growing operations.
How to Use Canna Coco A or B 10 Litre
Always mix Canna Coco A and B in equal quantities. Add Part A to your reservoir first, stir, then add Part B — never mix concentrated A and B directly together. Use at 2–4 ml per litre throughout the grow cycle, increasing to 3–5 ml per litre during peak flowering. Maintain pH at 5.8–6.2 in coco. Feed to 20–30% run-off at each watering to prevent salt accumulation. Supplement with Canna Rhizotonic and Cannaboost for the complete Canna programme.
Canna Coco A and B are sold individually so you can balance your A and B stock as needed. Browse our full Canna range for the complete product lineup including Rhizotonic, Cannaboost, Cannazym, and Canna PK 13/14.







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