Canna COCO (B) – 1 Liter

Canna COCO (B) is the B-part of CANNA’s two-component professional nutrient system formulated specifically for plants grown in coco coir substrate. Unlike conventional two-phase nutrients, COCO A&B uses a single formulation for both the growth and blooming phase — making it one of the simpler professional-grade nutrients to run in a coco grow room. This 1-liter bottle of the B component pairs with CANNA COCO A and delivers the phosphate and secondary elements that cannot share a bottle with the calcium-rich A part.

Canna COCO (B) – 1 Liter Specifications

Core product data for Canna COCO (B) – 1 Liter. This nutrient is the B component in the CANNA COCO two-part system. Always use COCO A and COCO B together at equal volumes.

Specification	Value
Brand	Canna
Product Name	COCO (B) – 1 Liter
Component	Part B (use with COCO A)
Volume	1 Liter
Weight	Approx. 2.0 lb (1.9996 lb)
Substrate Compatibility	Buffered coco coir substrate
Growth Phase Coverage	Grow and bloom (single formulation)
Cultivation Method	Drain-to-waste; recirculating coco systems

Why Choose Canna COCO (B) – 1 Liter

CANNA COCO is built around a practical insight: high concentrations of calcium and phosphate cannot coexist in a single bottle without forming precipitates. By splitting the formula into Part A (which carries the calcium) and Part B (which carries the phosphate and complementary elements), CANNA allows you to deliver both at the concentrations plants actually need without any compatibility issues in the bottle or your reservoir.

• One formulation, both phases: CANNA COCO does not require you to switch between a Vega and a Flores bottle. The same A+B formula runs through both the vegetative and flowering stages, reducing purchasing complexity and the risk of using the wrong product at the wrong time.
• Formulated for coco’s unique chemistry: Coco coir has a different cation exchange capacity and buffering behavior compared to soil or rockwool. CANNA developed COCO nutrients specifically around those characteristics, having researched coco substrates extensively before other manufacturers. The result is a nutrient calibrated for coco’s drainage profile, not repurposed from a soil or hydro formula.
• High-value mineral composition: CANNA COCO nutrient is composed of high-value mineral sources. The mineral quality directly affects how completely and how quickly the nutrient dissolves and becomes available at the root zone.
• Dissolves directly: The concentrate mixes cleanly into water without extensive agitation, which matters in high-frequency irrigation schedules common in drain-to-waste coco systems.
• Proven in professional grows: The CANNA COCO line has been used by commercial and hobbyist growers in coco for many years. The A+B system is a well-understood protocol with documented feeding schedules available from Canna.

Best Uses for Canna COCO (B) – 1 Liter

The 1-liter size is practical for home growers or small commercial operations that want to trial CANNA COCO before committing to larger volumes, or for growers who have limited storage space.

• Coco drain-to-waste systems: CANNA specifically developed this nutrient for drain-to-waste cultivation in buffered coco medium. High-frequency fertigation with daily or multiple-times-daily runs is the primary use case, and the direct-dissolving concentrate handles that well.
• Recirculating coco grows: While drain-to-waste is the primary recommendation, growers running recirculating systems with coco slabs or loose coco can also use COCO A+B, monitoring EC and runoff regularly.
• Full-cycle growing without formula switches: Growers who prefer to simplify their nutrient shelf — running the same base nutrient from seedling through late flower — benefit from not having to transition to a different base at the flip.
• Hobbyist-scale coco gardens: The 1-liter bottle is appropriate for growers running one to several plants in coco pots or slabs where large-format containers would go stale before use.
• Pairing with Canna-compatible additives: CANNA COCO A+B serves as a base nutrient that can be supplemented with Canna PK 13/14, Cannazym, or other compatible additives. If you are running enzyme products like enzyme-based additives alongside a base nutrient, CANNA COCO’s direct-dissolving formula integrates cleanly.

Canna COCO (B) vs Similar Products

The nearest available alternative identified in supplier data is a competing listing of the same product SKU (9410901) from a different distributor at $16.22 for the same 1-liter size — a roughly 25% price difference for the identical product. This comparison is between purchasing channels rather than competing products, confirming that sourcing through a competitive supplier meaningfully reduces cost per liter when running both A and B parts throughout a cycle.

More broadly, CANNA COCO (B) competes in the two-part coco base nutrient category against offerings like General Hydroponics Flora series adapted for coco and similar formulations from other manufacturers. The key differentiator CANNA emphasizes is that COCO A+B was purpose-built for coco substrate from the start — not a hydro or soil formula adapted for coco use. For growers who prefer a single-component root supplement alongside their base, products such as root-support nutrients can complement a coco base nutrient program without displacing it.

Compatibility

CANNA COCO (B) is designed for use exclusively in coco coir substrate. It is not intended for use in soil, rockwool, or recirculating deep water culture (DWC) systems — those applications have their own CANNA product lines (TERRA, AQUA, or SUBSTRA). For coco coir, this nutrient works in all container sizes and slab configurations.

On the additive side, CANNA COCO A+B is designed to pair with Canna’s own additive line, including Cannazym (enzyme), Rhizotonic (root stimulator), Cannaboost (flowering), and PK 13/14 (phosphorus-potassium supplement for late flower). Third-party additives that are coco-compatible and do not contain large calcium or phosphate loads can generally be introduced into the reservoir after the A and B parts are diluted. Always add A first, mix, then add B — never mix A and B together in concentrate form.

For growers supplementing with organic or biological inputs — for example, a carbohydrate supplement to support microbial activity — add those after the base A+B is fully diluted in the reservoir water and verify there is no precipitation before irrigating.

Dosing Guidelines

CANNA publishes feeding charts for COCO A+B on their website, with dose rates adjusted by growth stage. General guidance derived from the canonical product information:

• Add A before B, always: CANNA explicitly states you should add the A component to your reservoir water first, mix it thoroughly, and then add the B component. Adding them together in concentrate form or in reverse order can cause the calcium and phosphate to react and precipitate out, reducing nutrient availability.
• Typical dose range: CANNA COCO A+B is typically used at equal volumes of A and B per liter or gallon of water, at rates consistent with CANNA’s published grow schedule. Refer to the official CANNA feeding schedule at canna.com for current dose rates by stage, as these are updated periodically.
• pH and EC checks: After mixing A and B into your reservoir, verify the EC is within the target range for the current growth stage and adjust pH to the recommended range for coco (typically 5.5–6.2). Coco’s buffering characteristics mean runoff EC and pH can differ from input; monitoring both is important.
• Drain-to-waste frequency: In drain-to-waste coco systems, irrigate to 10–20% runoff at each feed to prevent salt accumulation in the substrate. The frequency and volume of each irrigation event depends on the plant size, container volume, climate conditions, and growth stage.

How to Prepare and Use

1. Start with fresh water: Fill your reservoir or mixing container with the desired volume of water at the correct temperature (ideally 18–22°C / 65–72°F). Colder water slows nutrient uptake; warmer water reduces dissolved oxygen.
2. Add CANNA COCO A first: Measure the appropriate volume of COCO A per your CANNA feeding schedule. Add it to the water and stir or circulate until fully mixed. Do not add COCO B yet.
3. Add CANNA COCO B second: Measure the same volume of COCO B and add it to the reservoir after COCO A is fully diluted. Stir or circulate again until fully mixed. This order prevents calcium-phosphate precipitation.
4. Add any other supplements: If using Canna additives or compatible third-party supplements, add them after the base nutrient is diluted. Allow each addition to mix before adding the next.
5. Check EC: Use a calibrated EC meter to confirm the nutrient concentration is within the target range for the current growth stage. Adjust by diluting with plain water (too high) or adding more nutrient (too low).
6. Adjust pH: Use a calibrated pH meter and pH Up/Down to bring the solution to the target range for coco (5.5–6.2, with many growers targeting 5.8–6.0). Check pH after all adjustments, as nutrient additions can shift it.
7. Irrigate with 10–20% runoff: In drain-to-waste coco, water until you see runoff from the bottom of the container. Allowing 10–20% runoff flushes accumulated salts and ensures fresh nutrients reach the lower root zone.
8. Store concentrate properly: Keep the COCO B bottle sealed, out of direct sunlight, and away from freezing temperatures when not in use. Do not store mixed nutrient solution for more than 24–48 hours.

Sources & Further Reading