1 L bottle of DualPart Coco Grow, coco growth fertiliser NPK 4-0-5

500 ml bottle of mineral fertiliser for coco fibre, growth formula

5 L container of DualPart Coco Grow, blue label

Coco growth fertiliser in three sizes, 500 ml, 1 L and 5 L

Mineral fertiliser for coco coir, growth 4-0-5

$12.47

Conditionnement	Price	Price per L	vs 500 mL
500 mL	$12.47	$24.94	—
1 L	$19.33	$19.33	−22 %
5 L	$62.81	$12.56	−50 %
10 L	$114.29	$11.43	−54 %

$4.15 × 3 with no fees Klarna.

This liquid fertiliser is added to the irrigation water for growing in coco fibre hydroponics, always alongside its flowering version, from seedling to harvest. It supplies the nitrogen and calcium the plant needs to form its leaves, with no additional supplements required.

This is the former FloraCoco Grow.

Ref. TA-DPCG-500·Hydroponic fertiliser

Conditionnement : 500 ml

500 mL

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The summary

What it is: the base fertiliser for coco coir hydroponics, added directly to your nutrient water.
Used with: always used alongside its bloom counterpart, from seedling to harvest.
How much: 0.5 to 3 ml per litre depending on the plant's growth stage — the full feeding chart is in the FAQ.
Key habit: always check the pH of your water, which should sit between 5.5 and 6.5.

Liquid fertiliser for hydroponics on coco fibre, to be used alongside its bloom version

This liquid fertiliser feeds plants grown in coco coir hydroponics, from seedling through to harvest. It works as a pair with its bloom counterpart: add a measure of each bottle to your nutrient water, and the resulting mix provides the plant with everything it needs. This grow bottle delivers primarily nitrogen, which builds leaves and stems, along with calcium, a nutrient that coco coir tends to lock up. No additional supplements are needed alongside it.

🧪 Two bottles, a single watering

Certain minerals react with each other when concentrated: the calcium in this bottle would form a precipitate with the phosphates in the flowering formula if combined in the same bottle. Once diluted in water, they coexist without issue. The separation offers a second advantage, as you can vary the proportion of each bottle as the plant develops. During the growth stage, the grow formula dominates; at flowering, it is the other way around. You never change products, you simply change the doses.

💧 Preparing your watering solution

Fill your watering can or reservoir with the desired amount of water.
Shake the growth bottle, add the correct dose, and mix.
Do the same with the flowering bottle, taking care never to combine the two concentrates in the same measuring jug.
Measure the pH of the water and bring it to between 5.5 and 6.5 using a pH adjuster.
Water until a little runs out from the bottom of the pot, which prevents salt build-up in the fibre.

Seedlings and cuttings

Allow 0.5 ml of each bottle per litre while the first roots are forming.

Young plants

Move to 1 ml of each bottle per litre as soon as the first true leaves appear.

Growth

Add 2.5 ml of grow and 1 ml of bloom per litre while the foliage is developing.

Flowering

The bloom version takes over, at 3 ml per litre against 1.5 ml of grow.

A pH test to get your first waterings right

Most difficulties beginners encounter stem from a poorly adjusted pH rather than a lack of fertiliser: outside the range of 5.5 to 6.5, the plant can no longer absorb the minerals present in the water correctly. A pH drop test kit gives you the answer in one minute, at every preparation. You then know whether the water is ready or whether it needs correcting before watering.

📏 Measuring the concentration

Conductivity, denoted EC and expressed in millisiemens (mS), indicates the amount of fertiliser dissolved in the water. A small electronic meter measures it in a matter of seconds. It should sit between 0.3 and 0.6 mS at first root formation, between 1.3 and 1.8 mS during growth, and rises to 2.2 mS at flowering. For your first crops, following the dosage table is sufficient; measuring conductivity becomes useful when you want to fine-tune the solution according to the vigour of your plants. Always take the reading last, once both bottles have been added and the pH adjusted.

Safety goggles when pouring the concentrate

The concentrate can cause serious injury if splashed into the eyes, and its nitrates can intensify a fire when in contact with combustible materials. Wear safety goggles when pouring it, and rinse thoroughly with water if it contacts your eyes. Store the bottle sealed, out of reach of children, away from heat, paper, and wood.

📦 Sizes and storage

The product is available in 500 ml and 1-litre bottles, and in 5- and 10-litre containers. Choose the same size for the flowering version, as the two are used up at a similar rate over the full growing cycle. During growth, at 2.5 ml per litre, the 1-litre bottle prepares 400 litres of irrigation water, forty 10-litre watering cans. It keeps for 5 years after opening, stored upright with the cap tightly closed. This programme is also suitable for pure coco fibre or coco mixed with perlite, whether in pots or on a flood-and-drain table.

Technical specifications

The formula

NPK: 4-0-5
Nitrogen: 4.2 %Of which 4% in nitric form
Calcium: 5 % CaO
Trace elements: Cu, Fe, Mn, Mo, ZnEDTA and DTPA chelated

Use

Seedlings and cuttings: 0.5 ml per litreWith 0.5 ml of bloom
Young plants: 1 ml per litreWith 1 ml of bloom
Growth: 2.5 ml per litreWith 1 ml of bloom
First buds: 3 ml per litreWith 2 ml of bloom
Flowering: 1.5 ml per litreWith 3 ml of bloom
Solution pH: 5.5 to 6.5

The bottle

Hazard classification: DangerH272 oxidising, H318 serious eye damage
Organic farming: Not suitable
Storage: 5 years after opening
Manufacturing: France

To budget for separately

Flowering version: The 1-6-4 coco bloom fertiliser
End of cycle: A late-bloom fertiliser

8 further specifications are available in the detailed view.

In the box

1 bottle of coco grow fertiliser, in your chosen size: 500 ml, 1 L, 5 L or 10 L

Composition, stage-by-stage doses, conductivity values, hazard classification and storage sourced on 01/10/2026 from the product datasheet, the 2025 application chart and the manufacturer's safety data sheet.

Mineral fertiliser or organic fertiliser for growth?

All three feed the growth phase. The first is managed by conductivity on coco fibre; the two organic fertilisers work through the microbial life of the grow medium.

Not sure whether to go mineral or organic? One is measured to the tenth of a millisiemens; the others feed the grow medium before the plant. Three questions are enough to decide.

	Shape	NPK	Calcium	Organic farming	Grow media	Nutrient management	Hazard classification	Price
Recommended Mineral fertiliser for coco coir, growth 4-0-5Your choice	Mineral liquid	4-0-5	5% CaO	No	Coco fibre only	By conductivity	Danger, eye protection required	$12.47
Liquid organic growth fertiliser, NPK 3-1-5Your choice	Organic liquid	3-1-5	Not guaranteed	Suitable for use	Soil, coco fibre, bioponics	Through microbial activity	Uncategorised	$13.61
Soluble powder organic growth fertiliser, NPK 7-2-8Your choice	Soluble powder	7-2-8	2,3 % de CaO	Suitable for use	Soil, coco fibre, bioponics	Through microbial activity	Uncategorised	$12.47

Mineral fertiliser for coco coir, growth 4-0-5Recommended

ShapeMineral liquid

NPK4-0-5

Calcium5% CaO

Organic farmingNo

Grow mediaCoco fibre only

Nutrient managementBy conductivity

Hazard classificationDanger, eye protection required

Liquid organic growth fertiliser, NPK 3-1-5

ShapeOrganic liquid

NPK3-1-5

CalciumNot guaranteed

Organic farmingSuitable for use

Grow mediaSoil, coco fibre, bioponics

Nutrient managementThrough microbial activity

Hazard classificationUncategorised

Soluble powder organic growth fertiliser, NPK 7-2-8

ShapeSoluble powder

NPK7-2-8

Calcium2,3 % de CaO

Organic farmingSuitable for use

Grow mediaSoil, coco fibre, bioponics

Nutrient managementThrough microbial activity

Hazard classificationUncategorised

Compositions, doses, and classifications recorded on 07/10/2026 from the product data sheets, the 2025 application chart, and the manufacturer's safety data sheets.

Documents & manuals

Safety data sheet, in French

The document brings together the safety data sheets for the grow and bloom versions, including hazard statements and first aid measures.

PDF · 0,4 Mo

Download

Estimate your
delivery time

Bottle dispatched by tracked parcel from France. Exact shipping costs and final delivery times are displayed at checkout once your address has been entered. Outside the European Union, import duties and taxes are the responsibility of the recipient.

Frequently asked questions

6 questions

6 key questions

What dose should you add at each stage?

Here are the doses per litre of water for the two bottles:

Stage	Grow	Bloom
Seedlings and cuttings	0.5 ml/L	0.5 ml/L
Young plants	1 ml/L	1 ml/L
Growth	2.5 ml/L	1 ml/L
Early buds	3 ml/L	2 ml/L
Flowering	1.5 ml/L	3 ml/L

The combined total of both bottles never exceeds 4.5 ml per litre. After flowering, a nitrogen-free end-of-bloom fertiliser takes over for the final 12 to 13 days.

Do you need to buy both bottles?

How do you adjust the pH of your irrigation water?

Should a calcium and magnesium supplement be added?

DualPart Coco and FloraCoco – are they the same product?

Is the product hazardous?

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Mineral fertiliser for coco coir, growth 4-0-5

The summary