Container of TriPart Grow by Terra Aquatica, growth fertiliser, on a white background

The complete TriPart range: Grow, Bloom, Micro soft water and Micro hard water

Official TriPart application chart for hydroponics and coco fibre

Official TriPart application chart for soil growing

TriPart Grow growth fertiliser

8,90 €

Capacity	Price	Price per L	vs 500 ml
500 ml	8,90 €	17,80 €	—
1 L	12,90 €	12,90 €	−28 %
5 L	40,90 €	8,18 €	−54 %
10 L	74,90 €	7,49 €	−58 %
60 L	379,90 €	6,33 €	−64 %

2,96 € × 3 with no fees Klarna.

This liquid mineral fertiliser with an NPK 3-1-6 formula supports the growth phase: stems, foliage, and root system. The first part of the TriPart system, it is dosed alongside the Micro and the Bloom, in hydroponics, coco fibre, and soil, from the 500 ml bottle to the 60 L container.

Ref. TA-TPG-500·Hydroponic fertiliser

Capacity : 500 ml

500 ml

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The summary

What it is: the Grow of the TriPart system, formerly FloraGro, a liquid mineral NPK 3-1-6 fertiliser that carries the growth phase.
How to use it: never on its own. It is dosed together with TriPart Micro and TriPart Bloom, and you vary the proportions according to the plant's stage.
How much to add: 1.8 ml per litre in full hydroponic growth, 1.5 ml per litre in soil. The calculator converts the amounts for your reservoir.
Where to use it: hydroponics, coco fibre, soil, and decoupled or fish-free aquaponics. On a stocked pond, the Aquaponic Mix is better suited.
The deficiency it corrects: lower leaves yellow right up to the veins, thin stems, elongated internodes. This is the classic picture of nitrogen deficiency.
Sizes and dispatch: 500 ml, 1 L, 5 L, 10 L or 60 L, shipped from France.

The nitrogen element of the TriPart trio, the one that drives the growth phase

TriPart Grow is the growth fertiliser in the TriPart system, a liquid mineral fertiliser with an NPK 3-1-6 formula, suitable for use in hydroponics, coco fibre, and soil. It delivers nitrogen, potassium, and magnesium. It is the former FloraGro, manufactured in Fleurance, in the Gers, and the name change did not alter the formula.

The imbalance in the formula is deliberate. Phosphorus is almost absent and comes from the Bloom, while iron and calcium are absent and come from the Micro. Poured on its own into your reservoir, the Grow gives an incomplete solution, on which deficiencies appear within a few weeks. The beginner's guide to indoor hydroponics explains how to prepare a first reservoir.

🌿 The three-part principle

A single-part fertiliser fits in one bottle and applies the same compromise from seedling to harvest, with too much nitrogen when the plant is filling out its fruit and not enough when it is building leaves. With three parts, you change the proportions instead of changing product. The drawback is obvious straight away: you need to measure out three products instead of one, rinse the doser three times, and the three bottles do not run down at the same rate. The TriPart Starter Kit brings all three together in 500 ml so you can try the system, and the doses in the application table show how the proportions change from one stage to the next.

In growth

Grow leads at 1.8 ml per litre, with 1.2 ml of Micro and 0.6 ml of Bloom. The target conductivity ranges from 1.3 to 1.8 mS.

In pre-flowering

All three converge around 1.5 to 2 ml per litre. The target pH shifts from 5.5–6.5 to around 6.4–6.8.

In flowering

Grow drops back to 0.8 ml per litre while Bloom reaches 2.4 and Micro 1.6. The target conductivity runs from 1.4 to 2.2 mS.

The two containers that come with it

Grow is never used on its own, as it needs TriPart Micro, in the version that suits your water, and TriPart Bloom. The price per litre drops noticeably from the 5 L size, which matters for a setup that runs all year round.

Never mix two concentrates together

Add each part separately to the water, mix, and rinse the measuring cup before moving on to the next. Pouring the Micro directly into the Bloom, or reusing an unrinsed measuring cup, makes salts precipitate and become unavailable to the plants. The solution will look normal, and part of what you have poured in will stay at the bottom of the reservoir without ever reaching your plants.

In soil, the application chart has its own column, markedly lower in the early stages. Grow goes from 0.5 to 0.2 ml per litre at first roots, which is 60% less, and from 1 to 0.6 ml at the first true leaves. The gap then narrows, with 1.5 ml instead of 1.8 in full growth, for a conductivity of 1.1 to 1.6 mS. For a 10-litre watering can in full growth, you therefore add 15 ml of Grow, 10 ml of Micro and 5 ml of Bloom.

💧 The order of preparation

The order matters as much as the doses, and it never changes. Start with a reservoir filled with water, add the Micro first and mix, then the Grow and mix again, then the Bloom. Only then do you correct the pH, never before, since every addition changes it. The Micro goes first because it supplies the calcium, and calcium added to water already loaded with sulphates and phosphates precipitates immediately. Conductivity is raised last, once the pH has been corrected.

📦 Sizes and storage

Choose the size according to your consumption over a full season, since an opened container keeps for 5 years after opening, which leaves time to use up a 5, 10 or 60 L container over several crops. Close the container straight after taking what you need and keep it away from frost. A deposit or crystallisation at the bottom of a container stored in the cold will go back into solution with agitation, and the product is not lost.

Technical specifications

The essentials

Declared formula: NPK 3-1-63% nitrogen, 1% P2O5 and 6% K2O.
Role in the system: Growth stageSupplies nitrogen, potassium, and magnesium. Phosphorus comes from the Bloom, trace elements from the Micro.
Dosage during full growth: 1.8 ml per litreHydroponics and coco fibre. In soil, 1.5 ml per litre.
Target pH in the reservoir: 5.5 to 6.5Until growth. From pre-flowering, 6.4 to 6.8.

Dosage and parameters

Target conductivity: 1.3 to 1.8 mSIn full hydroponic growth. In soil, 1.1 to 1.6 mS.
Appearance: Green liquid, odourlessThe colour prevents mixing up the containers when measuring out doses.

Safety and storage

Regulatory classification: Not classified as hazardousNo hazard pictograms, no warning statements. Safety advice P101 and P102.
Substance to declare: Ammonium nitrateBetween 4 and 10%, CAS number 6484-52-2. This is what requires the safe distance from combustible materials.
pH of concentrate: 4.2That of the product in its container, not to be confused with the target pH in the reservoir.
Storage: Upright, sealed, in a cool placeIn the original packaging, in a dry, well-ventilated place, away from food and combustible materials.

To budget for separately

TriPart Micro: Soft water or hard waterDepending on the calcium content of your water, threshold of 70 mg per litre.
TriPart Bloom: 1 bloom bottlePresent from the first roots at 0.5 ml per litre, never at zero.

4 further specifications are available in the detailed view.

In the box

1 bottle of TriPart Grow in your chosen size: 500 ml, 1 L, 5 L, 10 L or 60 L.

NPK formula taken from the container label. pH, density, classification and ammonium nitrate content: French safety data sheet, version 8 dated 25 July 2024. Dosages, pH ranges and conductivity ranges: application chart, recorded on 10 September 2026.

Grow, Micro, Bloom: what each one does in the TriPart system

The three bottles are not interchangeable and none of them is used on its own. This table shows what each one contributes, when it takes the lead, and which one requires particular care.

Grow never makes up a solution on its own The missing bottle depends on what you already have and the stage your plants are at. Two answers are enough to identify it.

	Total nitrogen (%)	Phosphorus, P2O5 (%)	Potassium, K2O (%)	Supplies calcium and iron	Supplies magnesium	Available in soft water and hard water versions	First roots (ml/L)	Full growth (ml/L)	Pre-flowering (ml/L)	Flowering (ml/L)	Present at a high dose at every stage	Classified hazardous	Safety glasses required when measuring	Liquid colour	Previous name
Recommended TriPart GrowYour choice	3 %	1 %	6 %	No	Yes	No	0,5 ml/L	1,8 ml/L	2 ml/L	0,8 ml/L	No	No	No	Green	FloraGro
TriPart MicroYour choice	5 %	0 %	1 %	Yes	No	Yes	0,5 ml/L	1,2 ml/L	2 ml/L	1,6 ml/L	Yes	Yes	Yes	Dark brown	FloraMicro
TriPart BloomYour choice	0 %	5 %	4 %	No	Yes	No	0,5 ml/L	0,6 ml/L	1,5 ml/L	2,4 ml/L	No	No	No	Pink	FloraBloom

TriPart GrowRecommended

Formula declared on the label

Total nitrogen (%)3 %

Phosphorus, P2O5 (%)1 %

Potassium, K2O (%)6 %

Supplies calcium and ironNo

Supplies magnesiumYes

Available in soft water and hard water versionsNo

Hydroponic dosage, millilitres per litre

First roots (ml/L)0,5 ml/L

Full growth (ml/L)1,8 ml/L

Pre-flowering (ml/L)2 ml/L

Flowering (ml/L)0,8 ml/L

Use and safety

Present at a high dose at every stageNo

Classified hazardousNo

Safety glasses required when measuringNo

Liquid colourGreen

Previous nameFloraGro

TriPart Micro

Formula declared on the label

Total nitrogen (%)5 %

Phosphorus, P2O5 (%)0 %

Potassium, K2O (%)1 %

Supplies calcium and ironYes

Supplies magnesiumNo

Available in soft water and hard water versionsYes

Hydroponic dosage, millilitres per litre

First roots (ml/L)0,5 ml/L

Full growth (ml/L)1,2 ml/L

Pre-flowering (ml/L)2 ml/L

Flowering (ml/L)1,6 ml/L

Use and safety

Present at a high dose at every stageYes

Classified hazardousYes

Safety glasses required when measuringYes

Liquid colourDark brown

Previous nameFloraMicro

TriPart Bloom

Formula declared on the label

Total nitrogen (%)0 %

Phosphorus, P2O5 (%)5 %

Potassium, K2O (%)4 %

Supplies calcium and ironNo

Supplies magnesiumYes

Available in soft water and hard water versionsNo

Hydroponic dosage, millilitres per litre

First roots (ml/L)0,5 ml/L

Full growth (ml/L)0,6 ml/L

Pre-flowering (ml/L)1,5 ml/L

Flowering (ml/L)2,4 ml/L

Use and safety

Present at a high dose at every stageNo

Classified hazardousNo

Safety glasses required when measuringNo

Liquid colourPink

Previous nameFloraBloom

Formulas recorded from the labels on the containers; classifications from the French safety data sheets. Dosages taken from the 2025 application chart, hydroponics and coco coir column. Values recorded on 10 September 2026.

Documents & manuals

TriPart application chart, hydroponics, coco and soil, multilingual document

The official schedule, stage by stage, in millilitres per litre for Grow, Micro, and Bloom, with target conductivity and pH ranges. Multilingual document, French and English included.

PDF · 4

Download

Safety data sheet TriPart Grow, in French

Version 8, dated 25 July 2024, compliant with European regulation 1907/2006: classification, declared composition, storage, and first aid.

PDF · 4

Download

Safety data sheet TriPart Grow, in English

The same safety data sheet in English, version 8 dated 25 July 2024, for a non-French-speaking contact.

PDF · 4

Download

Estimate your
delivery time

Liquid not classified as dangerous for transport, dispatched by tracked parcel from France. Weight varies considerably between sizes, from approximately 600 grams for the 500 ml to approximately 12 kilos for the 10 L: 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 remain the responsibility of the recipient. Delivery times run from the date of dispatch, excluding public holidays.

Frequently asked questions

6 questions

6 key questions

How much TriPart Grow should you use for 10 litres of water?

What is the dose in hydroponics, on coco fibre, and in soil?

The feeding chart has two columns. The values are in millilitres per litre of solution, and Grow is never used on its own.

Stage	Hydro and coco	Soil	Hydro EC
First roots	0.5	0.2	0.3 to 0.6
First true leaves	1	0.6	0.8 to 1.2
Growth	1.8	1.5	1.3 to 1.8
Pre-flowering	2	1.5	1.8 to 2.0
Flowering	0.8	0.7	1.4 to 2.2

At flowering, the Grow dose drops sharply while the Bloom dose reaches 2.4 ml per litre. Add each part separately to the water, one after the other, rinsing the measuring cap between each, and adjust the pH last: every addition changes it. Aim for 5.5 to 6.5 up to the growth stage, then 6.4 to 6.8 from pre-flowering onwards.

What happens if I add too much?

It is the conductivity that will tell you, not the leaves. The published ranges are 1.3 to 1.8 mS during growth and 2.0 mS at most in pre-flowering: beyond that, the solution is too concentrated.

If your reading is above the target, dilute with clean water until you are back within the range, then measure again. The leaves react several days late: by the time they show symptoms, the solution has been too concentrated for a long while.

The lower leaves are yellowing — is it a nitrogen deficiency?

Two sets of symptoms look alike but are not treated in the same way.

Nitrogen deficiency: the lower leaves turn an even yellow, veins included, while the top stays green. Stems become thinner and the internodes lengthen.
Potassium deficiency: the edges of the older leaves turn brown and curl, leaving the centre of the leaf blade green. Fruits swell poorly and ripen unevenly.

On a complete, correctly dosed solution, these two sets of symptoms often come from a pH that has drifted out of range, which hinders the uptake of several elements at once. Measure the pH before increasing the dose, otherwise you load the solution with salts without correcting anything. Our guide to plant deficiencies shows the symptoms in pictures.

Can it be used in aquaponics, on edible vegetables, or in organic growing?

In aquaponics, no, as soon as there are fish. TriPart is a mineral range; for a stocked pond, a separate product is formulated for this use, the Aquaponic Mix, designed to complement the mineralisation of waste without upsetting the balance of the water. On a decoupled loop, where the plants receive their own solution, TriPart is used as in hydroponics.

On vegetables, yes: it is a plant fertiliser, sold for growing plants, and it is designed for all types of plants, including vegetables. Finish the cycle with clean water, which the application chart calls flushing, and rinse your harvests. In certified organic farming, TriPart cannot be used; the brand's organic fertilisers, including the Pro Organic range, comply with European regulations 2018/848 and 2021/1165, and your certification body approves the choice.

Which container size should you choose?

Size	What it covers, at full growth
500 ml	Around 275 L of solution. The size to try it out.
1 L	Around 555 L. The usual size for a home setup.
5 L	Around 2,775 L. A whole season across several beds.
10 L	Around 5,550 L. For steady production.
60 L	Around 33,300 L. The drum for professional growers.

These volumes are calculated at 1.8 ml per litre, the full-growth dose. At the gentler stages, a bottle lasts far longer. The Grow comes in one version only, whatever your water: it is the Micro that comes in soft-water and hard-water versions, because it is the one that carries the calcium, with a benchmark of 70 mg of calcium per litre.

As for storage, the conditions are simple: keep the container tightly closed, upright, in a dry, cool, ventilated place, away from food and combustible materials, as the mixture contains between 4 and 10% ammonium nitrate. The product is not classified as hazardous and carries no pictogram, with two precautionary statements, P101 and P102. A bottle closed straight away and kept cool will keep for 5 years after opening. Shake it before each measure: any sediment that has appeared in the cold will redissolve at room temperature.

How much TriPart Grow for your reservoir

Enter the volume of water in your tank. The calculation applies the full-growth dose for hydroponics and coco fibre, 1.8 ml per litre, as shown in the manufacturer's feeding chart.

Reservoir water volume

5 L1000 L

0ml

of TriPart Grow, full growth-stage dosage in hydroponics and on coco fibre

Same stage, but in soil

0 ml

This dose is the one for the full growth stage. At the first roots, the dose in the table drops to 0.5 ml per litre, and at flowering the Grow dose goes back to 0.8 ml per litre while the Bloom dose increases. Grow never makes up a solution on its own: the same table prescribes Micro and Bloom at every stage. Always check the conductivity you obtain, which also depends on your starting water.

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TriPart Grow growth fertiliser

The summary