Plagron Cocos A&B Coco Nutrient for Grow and Bloom
Plagron Cocos A&B Coco Nutrient for Grow and Bloom
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Order by 3pm Mon–Thu for next-working-day delivery · FREE delivery over £50 · Free Wembley pickup
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One Base Feed for the Whole Coco Run
Cocos A&B is a highly concentrated two-part mineral base nutrient built specifically for buffered coconut substrates, covering both the growth and flowering phase. Coco is inert, so the plant depends entirely on what you feed it at every watering. Cocos A carries the calcium (4.5%) and Cocos B the phosphorus, kept apart so the two cannot bind and precipitate out of solution before your roots get near them.
Key Benefits
- Built for buffered coco: balanced ratios for an inert medium that supplies nothing itself
- No calcium lockout: separating Ca and P until dilution stops them precipitating and going unavailable
- Wide pH tolerance: nutrients stay directly absorbable across a broad pH band, giving you a buffer when the tank drifts
- Growth and flower in one: Cocos A NPK 4-0-1 and Cocos B NPK 1-4-2 cover the full cycle
- Magnesium on board: 2% MgO in Cocos B supports chlorophyll production and keeps lower leaves green
Why Does Coco Cause Poor Nutrient Uptake?
Coco dries fast and holds cations tightly, so salts build up and pH drifts between waterings. That is where slow growth, weak roots and pale plants come from. Because Cocos A&B stays absorbable across a wider pH range and is used at every irrigation, the root zone gets a fresh, balanced solution each time.
How to Use
- Coco (growth and flowering): add a maximum of 4 ml Cocos A per litre of water, a dilution of 1:250
- Always pair the parts: add the same quantity of Cocos B as Cocos A, never mixed together in concentrated form
- Every watering: use the combined solution each time you irrigate so the plant always has nutrition available
- Keep coco wet: water generously with a healthy run-off to prevent salt accumulation in the substrate
- pH: check and adjust your nutrient solution after mixing, and re-check once it has settled
Technical Specifications
- Type: two-part mineral base nutrient
- Medium: all buffered coconut substrates
- Stage: growth and flowering
- Cocos A NPK: 4-0-1
- Cocos A calcium: 4.5% Ca
- Cocos B NPK: 1-4-2
- Cocos B magnesium: 2% MgO
- Maximum dose: 4 ml of each part per litre (1:250)
- Frequency: every irrigation

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