TriPart Terra Aquatica Complete Pack: 4 x 1 L
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$50.00
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Complete hydroponic nutrition in one-litre bottles: the three parts of the TriPart system, Grow, Micro and Bloom, plus the pH- adjuster to keep the solution within the uptake range. Approximately 555 litres of solution at the full growth rate dose. Available in soft water and hard water versions.
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The summary
- What's included: four one-litre bottles — TriPart Grow, TriPart Micro, TriPart Bloom, and liquid pH- corrector.
- Which version: soft water for calcium levels below 70 mg per litre, hard water above. Only the Micro bottle differs.
- What it covers: approximately 555 L of solution at full growth rate, considerably more at lighter stages. A full season across several tanks.
- How much to use: 1.8 ml of Grow, 1.2 of Micro, and 0.6 of Bloom per litre at growth stage. The calculator converts the amounts for your reservoir.
- Caution: Micro is classified H318 and pH- is corrosive H314. Wear gloves and eye protection when measuring.
- Shipping: approximately 4.4 kg, dispatched together in a single parcel from France.
The three TriPart fertilisers and the pH corrector, one litre each
This pack brings together the four one-litre bottles that make up a complete hydroponic nutrient solution: the three parts of the Terra Aquatica TriPart system, Grow, Micro, and Bloom, plus the pH- corrector without which the first three cannot perform at their best. It is the direct successor to the General Hydroponics Flora Series, the most widely used three-part system in the world, now manufactured in Fleurance in the Gers.
The principle can be summed up in one sentence: three concentrates whose proportions are adjusted throughout the cycle, rather than a single fertiliser that compromises at every stage. Grow carries the nitrogen and potassium needed for growth, Bloom the phosphorus and potassium needed for flowering, and Micro permanently supplies the calcium, iron, and trace elements that the other two lack. pH- keeps the solution within the range where all of this remains available for uptake.
Why the 1 L size, not the 500 ml
What it covers
Around 555 L of solution at the full growth dose, and considerably more at stages where doses are lower. One season across several tanks.
The Starter Kit, alongside
In 500 ml, it is suitable for trialling the system on a first grow bed. This pack is aimed at those who have already done that test.
The corrector in a proper bottle
The Starter Kit contains a sachet of powdered pH-, enough to get started. This is a litre of liquid pH-, which can be dosed to the drop.
What the pack covers, and what it costs to use
Four one-litre bottles sounds abstract until you convert it into litres of solution. Here is what each bottle covers, at the two doses that define the cycle.
| One-litre bottle | Growth dose | Litres of solution | Flowering dose | Litres of solution |
|---|---|---|---|---|
| TriPart Grow | 1.8 ml per litre | 555 litres | 0.8 ml per litre | 1250 litres |
| TriPart Micro | 1.2 ml per litre | 833 litres | 1.6 ml per litre | 625 litres |
| TriPart Bloom | 0.6 ml per litre | 1666 litres | 2.4 ml per litre | 416 litres |
Calculation: 1000 ml divided by the dose in millilitres per litre. Hydroponics and coco fibre doses taken from the official feed chart; reduce by approximately 15 per cent for soil growing.
Over a full cycle, adding up the five stages gives 6.1 ml of Grow, 6.3 ml of Micro and 6.0 ml of Bloom per litre of solution. At that rate, the Micro bottle covers roughly 158 litres of solution from seedling to harvest, and it is the first to run out, because it works at every stage while the other two take turns. Based on a 30-litre reservoir refreshed every two weeks, the full set comfortably lasts an entire season.
| Per 100 litres of solution | Full growth | Cost | Flowering | Cost |
|---|---|---|---|---|
| TriPart Grow | 180 ml | 2.34 euros | 80 ml | 1.04 euro |
| TriPart Micro | 120 ml | 1.68 euro | 160 ml | 2.23 euros |
| TriPart Bloom | 60 ml | 0.78 euro | 240 ml | 3.12 euros |
| All three fertilisers | 360 ml | 4.80 euros | 480 ml | 6.39 euros |
Calculation method: the pack retails at 54.90 euros as of 25 August 2026, while the four bottles bought individually come to 58.60 euros, a saving of 6.3 per cent. We distribute this discount proportionally across each bottle's individual price, giving 13.02 euros per litre of Grow, 13.96 per litre of Micro, 13.02 per litre of Bloom and 14.90 per litre of pH-. The cost per 100 litres is that price per millilitre multiplied by the dose. pH- is not included: it has no fixed dose per litre, it depends on your water supply.
In other words, a 100-litre reservoir of complete solution costs less than five euros in fertiliser during growth and less than seven euros during flowering, pH correction not included. That is the figure to keep in mind when comparing with a ready-to-use fertiliser sold by the litre of solution. For those who have not yet tried the system, the 500 ml Starter Kit covers the same uses over volumes four times smaller; and if you get through one of the three parts particularly quickly, it remains more economical to repurchase that bottle alone in the 5-litre format, for example TriPart Micro soft water or its hard water version. Our guide on which fertiliser to use places this system in context alongside other options.
Soft water or hard water: the only thing you need to decide
It is the Micro bottle that changes, not the other three. The reference point is 70 mg of calcium per litre in your water: below that, use the soft-water version; above it, use the hard water version, which applies to the majority of French water supplies. Your water company's annual report will give you this figure; an aquarium hardness test kit works just as well.
How to use it day to day
Fill the reservoir, add each part separately while rinsing the measuring cap between each addition, mix, then adjust the pH last using pH-. The order matters for a precise chemical reason: the calcium in Micro and the phosphorus in Bloom, if brought into contact in concentrated form, produce an insoluble phosphate that sinks to the bottom of the container and becomes unavailable to anyone. Once diluted, they coexist without issue. The calculator on this page converts the doses for your volume, and the official application chart is available to download at the bottom of the page.
Two of the four bottles require eye protection
The Micro is classified H318, it causes serious eye damage. The pH- is classified H314, corrosive, at pH 1. Wear gloves and goggles when measuring out doses, rinse thoroughly and seek medical advice if any splashing occurs. Grow and Bloom are not classified as hazardous. Once everything is diluted in the reservoir at working concentrations, these risks no longer exist.
This pack covers nutrition, not measurement. A pH meter or colorimetric test and, ideally, a conductivity meter remain essential: without them, neither the dosages nor the adjuster can do their job. See the water analysis collection. If your water fluctuates in both directions, the pH- and pH+ duo is a useful complement to this pack. And to lay the groundwork before you start, our indoor hydroponics guide is the right place to begin.
What the pack does not include and what you will need to provide
Four bottles don't make a complete setup. Here are the four items that are missing, and the precise reason why each one is necessary rather than merely convenient.
| What else you need | Why you can't do without it |
|---|---|
| A pH meter, or a liquid drop test kit | Without measurement, the pH- bottle is dosed blind, and the target ranges in the application chart, 5.5 to 6.5 up to pre-flowering, then 6.4 to 6.8, become meaningless. A pH meter requires regular calibration with buffer solutions; a drop test kit requires none and is perfectly adequate to start with. |
| An EC meter | It measures the total dissolved salt load of your solution. It's the only way to detect that a reservoir is concentrating through evaporation, or that a solution has become too weak, before the plant shows any symptoms. It also lets you verify that the doses you've added actually correspond to what you think you've added. |
| A graduated measuring cylinder, or a syringe | Doses range from 0.5 to 2.4 ml per litre. In a 20-litre reservoir, that means volumes of 10 to 48 ml, which need to be read to the nearest millilitre. Guessing with a cap is enough to throw the solution off by 20 per cent, and that error compounds with every top-up. |
| A rinse container, kept next to the reservoir | The calcium in Micro and the phosphorus in Bloom form an insoluble phosphate if they come into contact in concentrated form. The measuring cylinder must therefore be rinsed between each part, and a dedicated glass of clean water kept nearby allows you to do this without interrupting your workflow or walking back to the sink. |
Both measuring instruments can be found in the water analysis collection, and our article on pH regulation explains what to do with them once you have them. One final point to consider depending on your water supply: this pack includes pH- but not pH+. If your water is soft, RO or rainwater, the pH will drop on its own and you'll have no way to raise it, which is covered by the pH- and pH+ duo.
Both versions of the pack, side by side
| What's in the pack | Soft water version | Hard water version |
|---|---|---|
| TriPart Grow 1 L | Identical | Identical |
| TriPart Bloom 1 L | Identical | Identical |
| pH- Corrector 1 L | Identical | Identical |
| TriPart Micro 1 L | Soft water, calcium nitrate 15 to 22.5% | Hard water, calcium nitrate 5 to 10% |
| Suitable water type | RO, rainwater, or below 70 mg of calcium per litre | Hard tap water, above 70 mg of calcium per litre |
| Parcel weight | Approximately 4.4 kg | Approximately 4.4 kg |
| Price | Identical | Identical |
Only one bottle differs between the two versions of the pack: the Micro. The two images on this page show exactly that difference, the third bottle from the left is labelled Soft Water in one and Hard Water in the other. The Grow, the Bloom, and the pH corrector are exactly the same, as is the price.
Technical specifications
What's included in the pack
- TriPart Grow
- 1 LNPK 3-1-6. Nitrogen, potassium and magnesium for the vegetative phase. Green liquid, not classified as hazardous.
- TriPart Micro
- 1 LNPK 5-0-1. Calcium, iron and trace elements. Soft water or hard water version depending on the pack chosen. Classified H318.
- TriPart Bloom
- 1 LNPK 0-5-4. Phosphorus, potassium, magnesium and sulphur for flowering. Pink liquid, not classified as hazardous.
- pH Down corrector
- 1 LA blend of three acids buffered with organic regulators. Yellowish liquid, pH 1, classified H314.
- Parcel weight
- Approximately 4.4 kgFour one-litre bottles, packaging included, shipped together.
- Covered solution
- Approximately 555 LAt the full growth dose of 1.8 ml of Grow per litre. Considerably less at gentler stages.
Use and precautions
- Order of addition
- Separately, in waterNever mix one concentrate into another: the calcium in Micro and the phosphorus in Bloom precipitate on direct contact.
- pH adjustment
- Last stepAfter adding all three fertilisers, as each one shifts the reading.
- Growth dose
- 1.8 / 1.2 / 0.6 ml/LGrow, Micro and Bloom respectively, in hydroponics and in coco. In soil, approximately 15 per cent less.
- Target pH
- 5.5 to 6.5Up to pre-flowering, then 6.4 to 6.8 thereafter.
- Target conductivity
- 1.3 to 1.8 mSIn full hydroponic growth. Subtract the conductivity of your plain water.
- Containers classified as hazardous
- Micro and pH-H318 for one, H314 for the other. Wear goggles and gloves when measuring. The other two are not classified.
4 further specifications are available in the detailed view.
In the box
- 1 bottle of TriPart Grow 1 L.
- 1 TriPart Micro 1 L bottle, in soft water or hard water version depending on the pack chosen.
- 1 bottle of TriPart Bloom 1 L.
- 1 bottle of liquid pH- corrector of 1 L.
- No measuring cup, no syringe, and no safety glasses are included.
- No pH meter, conductivity meter or hardness test kit: see the water analysis collection.
The NPK formulas are those printed on the bottle labels. The dosages, pH ranges, and conductivity values come from the manufacturer's official application chart. The H318 classification for Micro and H314 for pH- come from their French safety data sheets, version 9 dated 25 July 2024 and the version dated 22 November 2023 respectively. The 70 mg calcium per litre threshold is a reference cross-checked across two retailer data sheets and was not found as stated in any manufacturer document. The volume of solution covered is calculated directly from the growth dose. This pack is assembled by us from the four references sold separately: it is not a manufacturer packaging.
What each of the four bottles in the pack does
Three fertilisers and one pH corrector. This table shows what each one provides, at which stage it takes the lead, and which ones require gloves.
| TriPart GrowYour choice | TriPart MicroYour choice | TriPart BloomYour choice | pH Down correctorYour choice | |
|---|---|---|---|---|
| Formula as declared on the label | ||||
| Total nitrogen (%) | 3 % | 5 % | 0 % | 0 % |
| Phosphorus, P2O5 (%) | 1 % | 0 % | 5 % | 0 % |
| Potassium, K2O (%) | 6 % | 1 % | 4 % | 0 % |
| Provides calcium and iron | no | yes | no | no |
| This is what changes between the two versions of the pack | no | yes | no | no |
| Dosage in hydroponics, millilitres per litre | ||||
| First roots (ml/L) | 0,5 ml/L | 0,5 ml/L | 0,5 ml/L | 0 ml/L |
| Full growth (ml/L) | 1,8 ml/L | 1,2 ml/L | 0,6 ml/L | 0 ml/L |
| Flowering (ml/L) | 0,8 ml/L | 1,6 ml/L | 2,4 ml/L | 0 ml/L |
| Fixed dose per litre | yes | yes | yes | no |
| Use and safety | ||||
| Present at high levels at every stage | no | yes | no | no |
| Classified as hazardous | no | yes | no | yes |
| Gloves and goggles when measuring | no | yes | no | yes |
| Liquid colour | Green | Dark brown | Pink | Yellowish |
| Add last | no | no | no | yes |
TriPart Grow
Formula as declared on the label
Total nitrogen (%)3 %
Phosphorus, P2O5 (%)1 %
Potassium, K2O (%)6 %
Provides calcium and ironno
This is what changes between the two versions of the packno
Dosage in hydroponics, millilitres per litre
First roots (ml/L)0,5 ml/L
Full growth (ml/L)1,8 ml/L
Flowering (ml/L)0,8 ml/L
Fixed dose per litreyes
Use and safety
Present at high levels at every stageno
Classified as hazardousno
Gloves and goggles when measuringno
Liquid colourGreen
Add lastno
TriPart Micro
Formula as declared on the label
Total nitrogen (%)5 %
Phosphorus, P2O5 (%)0 %
Potassium, K2O (%)1 %
Provides calcium and ironyes
This is what changes between the two versions of the packyes
Dosage in hydroponics, millilitres per litre
First roots (ml/L)0,5 ml/L
Full growth (ml/L)1,2 ml/L
Flowering (ml/L)1,6 ml/L
Fixed dose per litreyes
Use and safety
Present at high levels at every stageyes
Classified as hazardousyes
Gloves and goggles when measuringyes
Liquid colourDark brown
Add lastno
TriPart Bloom
Formula as declared on the label
Total nitrogen (%)0 %
Phosphorus, P2O5 (%)5 %
Potassium, K2O (%)4 %
Provides calcium and ironno
This is what changes between the two versions of the packno
Dosage in hydroponics, millilitres per litre
First roots (ml/L)0,5 ml/L
Full growth (ml/L)0,6 ml/L
Flowering (ml/L)2,4 ml/L
Fixed dose per litreyes
Use and safety
Present at high levels at every stageno
Classified as hazardousno
Gloves and goggles when measuringno
Liquid colourPink
Add lastno
pH Down corrector
Formula as declared on the label
Total nitrogen (%)0 %
Phosphorus, P2O5 (%)0 %
Potassium, K2O (%)0 %
Provides calcium and ironno
This is what changes between the two versions of the packno
Dosage in hydroponics, millilitres per litre
First roots (ml/L)0 ml/L
Full growth (ml/L)0 ml/L
Flowering (ml/L)0 ml/L
Fixed dose per litreno
Use and safety
Present at high levels at every stageno
Classified as hazardousyes
Gloves and goggles when measuringyes
Liquid colourYellowish
Add lastyes
All four bottles are included in the pack, each containing 1 L. The formulas are those printed on the labels; the dosages come from the official application chart, hydroponics and coco fibre column. The pH- corrector has no per-litre dose: the quantity depends entirely on the buffering capacity of your water, which is why its column shows zeros in the dosage rows. The hazard statements are H318 for the Micro and H314 for the pH-, taken from their French safety data sheets. Only the Micro bottle differs between the soft-water and hard-water versions of the pack.
Documents & manuals
TriPart application chart, hydroponics, coco and soil, multilingual document
The official stage-by-stage chart, in millilitres per litre for the three fertilisers in the bundle. It also gives the target conductivity and pH ranges. The document is multilingual, with French and English side by side: there is no separate English version.
Safety data sheet for TriPart Micro soft water, in French
Version 9 dated 25 July 2024. H318 classification, declared composition and protective equipment to wear when dosing.
Safety data sheet for pH- corrector, in French
Version dated 22 November 2023. H314 classification, orthophosphoric acid content and procedure in case of contact.
Safety data sheet du TriPart Micro eau douce, in English
Version 9 dated 25 July 2024, same content as the French data sheet: H318 classification, declared composition, and mandatory eye protection at the stated dosage. Document in English.
Safety data sheet du TriPart Micro eau dure, in English
Version 9 dated 25 July 2024, for the hard-water version of the pack — the one supplied if you are growing with calcareous tap water. Same H318 classification. Document in English.
Safety data sheet TriPart Grow, in English
Version 8 dated 25 July 2024. This container is not classified as hazardous: only precautionary statements P101 and P102 appear on the label. Document in English.
Safety data sheet TriPart Bloom, in English
Version 7 dated 26 December 2023, for the third fertiliser in the pack. Product not classified as hazardous, with the same precautionary statements P101 and P102. Document in English.
Safety data sheet du correcteur pH-, in English
Version 8 dated 22 November 2023, for the fourth bottle in the pack. H314 classification, orthophosphoric acid content and procedure to follow in case of contact. Document in English.
Document not showing? Some publishers block display inside a frame, so open it in a tab.
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Estimated time
It covers preparing your order and then the transit time quoted by the carrier, counted in working days.
It is not a guaranteed delivery date: public holidays, peak periods, customs or a carrier delay can extend it. The exact amount, in your currency, is worked out in the cart once your address is entered.
Four one-litre bottles shipped together, approximately 4.4 kg, by tracked parcel from France: a single shipment instead of four. None of the four is classified as dangerous for transport, despite the H318 and H314 statements, which relate to handling. The exact shipping costs are displayed at checkout once your address has been entered.
Frequently asked questions
14 questions
6 key questions, 14 in the detailed view
No questions in this category.
How much TriPart Grow for your reservoir
Enter the volume of water in your reservoir. The calculation applies the full-growth dose of Grow, 1.8 ml per litre. Micro and Bloom are dosed in parallel, at 1.2 and 0.6 ml per litre at the same stage.
L
5 L1000 L
0ml
of TriPart Grow, full-growth dose in hydroponics and coco
Micro dose at the same stage
0 ml
Full doses for hydroponics and coco, in millilitres per litre, in the order Grow, Micro, Bloom: first roots 0.5 / 0.5 / 0.5; first true leaves 1 / 1 / 1; vegetative growth 1.8 / 1.2 / 0.6; pre-flowering 2 / 2 / 1.5; flowering 0.8 / 1.6 / 2.4. In soil, reduce by approximately 15 per cent. pH- is added last, with no fixed dose: it depends on the buffering capacity of your water.
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