Organic fertiliser for aquaponics Aquaponic Mix, NPK 0-0-4

Regular price $13.00
Regular price Sale price $13.00
Packaging Price Price per L vs 500 mL
500 mL $13.00 $26.00—
1 L $17.00 $17.00−35 %
5 L $72.00 $14.40−45 %
10 L $130.00 $13.00−50 %

This liquid organic fertiliser with an NPK 0-0-4 formula is added directly to water containing fish. It supplies the potassium and chelated trace elements that fish waste does not provide, without destabilising the biofilter. Made in France, it is approved for use in organic farming.

Ref. TA-AQM-500·Aquaponics fertiliser
Packaging : 500 ml
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The summary

  • What you receive: a bottle of organic liquid fertiliser 0-0-4, in 500 ml, 1 L, 5 L, or 10 L.
  • The dose: 0.5 ml per 10 litres of water, every day, once your crops are established.
  • What it supplements: the potassium and trace elements that the mineralisation of fish waste does not provide.
  • How to choose: this one can be added to water containing fish; a growth fertiliser cannot.

Potassium and chelated trace elements to add to water that houses fish

The Aquaponic Mix organic fertiliser, with an NPK 0-0-4 formula, is poured into water that houses fish. It provides the potassium and chelated trace elements that the mineralisation of fish waste does not supply, without adding nitrogen or phosphorus that would overload the biofilter. The dose is 0.5 ml per 10 litres of water, every day.

This organic liquid fertiliser is made for water that houses fish. Its NPK 0-0-4 formula supplies neither nitrogen nor phosphorus, because both already arrive through the mineralisation of waste. You therefore make up what your fish do not provide, namely potassium and chelated trace elements, without disturbing the micro-organisms in the biofilter.

🐟 The hydroponics fertiliser and the fish

A hydroponic fertiliser supplies its nitrogen as concentrated mineral salts, nitrates and often a share of ammonium. If your reservoir contains no fish, that is exactly what you need. In water that houses fish, ammonium is precisely the form that the bacteria in the biofilter oxidise into nitrite and then nitrate, so adding it from the bottle increases the load your filter already has to nitrify from the waste. The nitrogen cycle describes this conversion step by step.

What the fish provides

The mineralisation of waste releases nitrogen and phosphorus, the elements plants consume most.

Both to keep an eye on

Little potassium comes in through the feed, and non-chelated iron precipitates as soon as the pH rises above 7.

Trace elements

Iron, manganese, zinc, copper and boron are chelated and therefore readily available to plants.

Measure iron and potassium levels before dosing

Yellowing leaves can have several causes. The iron test, which measures from 0.02 mg/L, confirms or rules out the most common deficiency. The potassium test covers the one that fish feed rarely makes up. With both readings to hand, you can adjust the supply to what your system actually uses.

💧 Everyday dosing

The dose is 0.5 ml per 10 litres of water, every day, from the moment your crops are established. A 200-litre system therefore receives 10 ml a day, a little over 3.6 litres over a year. Shake the container before pouring, since the organic matter settles at the bottom between uses, and pour into an area with water movement. Two limits go with this dose: it is applied only when a need has been identified, and the prescribed dose must not be exceeded.

Store the container between 5 and 25 °C

Store the container in a dry place, in its original sealed packaging, at a temperature between 5 and 25 °C. An unheated garden shed is therefore not suitable in winter. The product keeps for 2 years from its production date, and should be stored out of reach of children.

📦 Which size for which volume

The right size depends on the volume of water actually in circulation, fish tank and reservoir included, since the dose follows the litres and not the number of plants. If your system holds 200 litres, a 500 ml bottle lasts 50 days and the 1-litre container 100 days, at 10 ml a day. If you run a 500-litre system, the 5-litre container covers a full season, at 25 ml a day. The 10-litre container is meant for installations of at least 1,000 litres, where it lasts 200 days, which is well within its shelf life of 2 years.

Technical specifications

The formula

Declared formula
NPK 0-0-4No nitrogen or phosphorus, those come from the fish
Potassium
Potassium oxide, 4 %
Calcium
Calcium oxide, 1%
Trace elements
Iron, manganese, zinc, copper, boronAll chelated, so held in solution and readily absorbed

Dosage and use

Dose
0.5 ml per 10 LEvery day, from the moment the crops are installed
Before pouring
Shake the containerOrganic matter settles between uses
Storage
Between 5 and 25 °C2 years from the production date, unopened packaging
Certification
Suitable for organic farmingRegulations (EU) 2018/848 and 2021/1165

Origin and use

Manufacturing
France
Environment
Indoor and outdoor

To budget for separately

Iron monitoring
A liquid iron test kit
Potassium monitoring
A potassium drop test

4 further specifications are available in the detailed view.

In the box

  • 1 bottle of Aquaponic Mix in the chosen size: 500 ml, 1 L, 5 L or 10 L

Formula, guaranteed analysis, application rate, and certification recorded on 20/09/2026 from the manufacturer's website, their 2025 catalogue, and the product label. Storage: safety data sheet dated 17/01/2024.

Manufacturer and product safety

Manufacturer
TERRA AQUATICA (SAS, SIREN 840329619), ex General Hydroponics Europe
Postal address
4 boulevard du Biopole, ZI du Biopole, 32500 Fleurance, France
Contact
info@terraaquatica.com ; +33 5 62 06 08 30

Information provided under Regulation (EU) 2023/988 on general product safety.

Feed plants with or without fish in the water

Two liquid fertilisers, two sources of nitrogen

Are you torn between these two fertilisers? One is added to water housing fish, the other feeds a nutrient solution reservoir. Three questions separate the two situations.

Declared formulaNitrogen sourceReference doseTarget cropRaw materialsPrice
Recommended
Organic fertiliser for aquaponics Aquaponic Mix, NPK 0-0-4Your choice		0-0-4Fish waste0.5 ml per 10 litres, every dayAquaponic system with fishOf organic origin$13.00
TriPart Grow growth fertiliserYour choice3-1-6The container, in mineral form1,8 ml per litre during full growthSoil-free growing without fishMineral salts$11.00
Organic fertiliser for aquaponics Aquaponic Mix, NPK 0-0-4Recommended
Declared formula0-0-4
Nitrogen sourceFish waste
Reference dose0.5 ml per 10 litres, every day
Target cropAquaponic system with fish
Raw materialsOf organic origin
TriPart Grow growth fertiliser
Declared formula3-1-6
Nitrogen sourceThe container, in mineral form
Reference dose1,8 ml per litre during full growth
Target cropSoil-free growing without fish
Raw materialsMineral salts

Formulas, doses and raw materials recorded on 20/09/2026 from the manufacturer.

Estimate your
delivery time

Liquid 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

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