50 L bag of coco fibre with perlite, front view

Three-quarter view of a pure coco fibre bag, with labels and volume clearly visible

Three-quarter view of coco fibre and perlite bag, orange band

50 L coco fibre, natural or with perlite

Name: 50 L coco fibre, natural or with perlite
Brand: Terra Aquatica
SKU: TA-SUB-COCO-50
Availability: InStock

21,90 €

7,30 € × 3 with no fees Klarna.

Coco fibre is a soilless grow medium that retains water like a sponge whilst allowing air to pass through. This 50 L bag can be opened and used straight away.

You can choose between two compositions. The natural fibre retains more water, while the fibre blended with a quarter perlite drains more quickly.

Ref. TA-SUB-COCO-50·Growing medium

Composition : Pure coco

Pure coco

Coco and perlite

Customer support 7 days a week by email

Delivery within 2 to 15 business days

100 % secure payment

The summary

What it is: a 50 L bag of coco coir, a clean soilless grow medium that you simply open and pour.
Two compositions: natural coir holds more water, while coir blended with a quarter perlite drains faster.
You control the nutrition: you add fertiliser at every watering, using a formula designed for coco coir.
Reusable: you rinse the grow medium between crops and start again for another cycle, 3 times in all.
Bag weight: it weighs 12.5 kg in natural coir and 10.6 kg with perlite, which is lighter.
pH: it is your nutrient solution that sets the pH of the crop, and you measure it on the drainage water.

Growing medium 50 L, natural coconut fibre or with perlite

Coco fibre is a by-product of the coconut industry, and has become one of the main soilless growing media in place of peat. It holds water like a sponge while still letting air through, it breaks down slowly, and producing it does not require draining a peat bog. This 50 L bag can be opened and poured as it is, without rinsing, as pure fibre or mixed with a quarter perlite.

💧 Water and air in the pot

A root needs water and oxygen at the same time, and the structure of coco fibre provides both. Its fibres hold water available for hours while leaving air passages between them. You can water a fibre that has dried out without it repelling the water, unlike dried-out peat, and you supply the nutrition in the irrigation water, which leaves you in control of what the plant receives at each stage of its growth.

🪴 Natural or with perlite

Retention

The fibre behaves like a sponge. It keeps water available for a long time and tolerates a forgotten watering better.

Aeration

The fibre lets air through as long as it is not packed down. A compressed grow medium loses this advantage.

Nutrition

You add the fertiliser to the watering water, and you adjust the formula to the plant's growth stage.

Reuse

The fibre can be reused over 3 growing cycles. Between cycles, a thorough rinse returns it to its original state.

Perlite is an expanded volcanic rock, in the form of white, porous, incompressible beads. Mixed in at a quarter, it stops the fibre from compacting and keeps pockets of air even when the grow medium is saturated. The mix then tolerates frequent or rather generous watering, where natural fibre eventually runs short of air. Choose the natural fibre if you water by hand and at spaced intervals, and the version with perlite if your watering is frequent or automated.

Compaction, watering, rinsing

Do not compact the grow medium when filling the pot, because the fibre then loses its air passages and the roots suffocate. Pour and level without pressing down. Do not water with plain water either, since the grow medium provides no nutrients and the plant receives only what you pour on, from the very first watering. Finally, rinse thoroughly between two crops, which flushes out the salts left by the nutrient solution and restores the grow medium to its original conductivity.

A fertiliser formulated for coco fibre

Coco fibre exchanges elements with the nutrient solution: it holds back some and releases others, so a fertiliser designed for soil becomes unbalanced in it within a few waterings. The DualPart Coco fertiliser is dosed to take these exchanges into account, and it is added from the very first watering, as the grow medium contains no reserves. You then monitor the pH of the drainage water to check that the solution stays within its range.

🌿 Pot, ebb-and-flow table, seedlings

Pot growing is the main use, with complete nutrition supplied at every watering. On an ebb and flow table, the natural fibre holds water for several hours, which lets you space out the flood cycles. For seedlings, its fineness suits seeds well, provided you start feeding from the first true leaves. The overview of grow media places coco fibre among the other options.

♻️ Reusing the fibre

A coco coir grow medium lasts around 3 growing cycles, and reusing it takes preparation. At the end of a healthy crop, remove the root ball and larger debris, then rinse generously with clean water until the conductivity of the water coming out matches that of the water going in. This rinse flushes out the accumulated salts, which are the real limit on reuse, well before structure. After a root attack, however, the coir goes to the compost heap rather than into the next pot, as a fibrous grow medium holds spores far better than a mineral one. Finally, add a portion of fresh perlite with each reuse, as the coir loses a little of its volume and porosity with every cycle.

Technical specifications

The essentials

Volume: 50 LOne bag fills around fifteen 3 L pots.
Composition: Coir · 75 % coir and 25 % perliteTwo versions to choose from: natural fibre or fibre blended with perlite.
Setting up: The bag opens and poursNothing to rinse before planting.
Nutrition: Supplied with every wateringWith a formula designed for coco fibre, from the very first watering.
Reuse: Up to 3 cyclesRinse thoroughly between crops to flush out accumulated salts.
Bag weight: 12.5 kg · 10.6 kgNatural fibre, then fibre with perlite: for the same volume, the perlite makes the bag nearly 2 kg lighter.

To budget for separately

Fertilizer: A formula for cocoIt is dosed for the way this grow medium exchanges with the nutrient solution.
Containers: Pots or slotted basketsWork out the volume before ordering: 50 L fills around fifteen 3 L pots.

In the box

1 bag of 50 L coco fibre, in the version chosen, natural or with perlite.

Volume, composition of the two versions, origin, number of reuses and weight of the bags taken from the manufacturer's price list and shop on 08/10/2026. The roughly fifteen 3 L pots is an order of magnitude calculated from the volume of the bag.

Pure or with perlite?

Same fibre, same volume, same preparation. Only the circulation of water and air changes.

Both bags hold 50 litres: what changes is the speed of the water Perlite opens up the grow medium and lets water drain through. Without it, the fibre holds moisture for longer and copes better with a forgotten watering.

	Holds water for a long time	Drains quickly after watering	Suitable for frequent drip irrigation	Tolerates a missed watering	Volume (L)	Weight (kg)	Pre-fertilised	Rinsing required before use
Recommended Pure cocoYour choice	Yes	No	No	Yes	50 L	12.5 kg	No	No
Coco and perliteYour choice	No	Yes	Yes	No	50 L	10.6 kg	No	No

Pure cocoRecommended

How the water behaves

Holds water for a long timeYes

Drains quickly after wateringNo

Suitable for frequent drip irrigationNo

Tolerates a missed wateringYes

The bag

Volume (L)50 L

Weight (kg)12.5 kg

Pre-fertilisedNo

Rinsing required before useNo

Coco and perlite

How the water behaves

Holds water for a long timeNo

Drains quickly after wateringYes

Suitable for frequent drip irrigationYes

Tolerates a missed wateringNo

The bag

Volume (L)50 L

Weight (kg)10.6 kg

Pre-fertilisedNo

Rinsing required before useNo

Volume, composition and weight recorded from the manufacturer's price list and shop, on 08/10/2026. Both are run in the same way: same fertiliser, same target pH, same number of reuses.

Documents & manuals

Manufacturer's page, coco fibre

Presentation of the manufacturer's two coco fibres, pure and with perlite, in English.

LIEN

Download

Estimate your
delivery time

50 L bag. Volume counts for more than weight when calculating shipping: a bag of grow medium takes up the space of several standard parcels. Exact shipping costs and final delivery times are shown 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 dispatch, excluding public holidays.

Frequently asked questions

8 questions

6 key questions, 8 in the detailed view

Pure coco or coco with perlite: which should you choose?

Both bags contain the same coco coir. Perlite replaces a quarter of it, and that changes just one thing: how fast water drains through.

Your situation	Pure coco	Coco and perlite
Hand watering, 1 to 2 times a day	yes	dries out quickly
Frequent drip irrigation, ebb-and-flow table	risk of overwatering	yes
Deep pots, over 15 L	compacts at depth	yes
You are often away	yes	dries out faster
Plants prone to root suffocation	no	yes

In short, pure coco coir is more forgiving of a missed watering, while coco coir with perlite is more forgiving of too much water. The bag with perlite is also lighter to carry, by about 2 kg, for the same volume.

Does the fibre need rinsing before use?

Does this grow medium feed the plant?

Which fertiliser should I use with coco fibre?

Choose a fertiliser formulated for coco fibre, such as DualPart Coco. This grow medium exchanges elements with the nutrient solution: it retains some and releases others. A formula designed for coco fibre is dosed accordingly, whereas a fertiliser designed for soil becomes unbalanced in it within a few waterings.

The sign of a poor choice is a deficiency on the young leaves even though your solution contains what they lack.

What is the pH of this grow medium?

What exactly does perlite change?

Perlite is an expanded volcanic rock, inert and full of air pockets. It provides no nutrients and holds no water: it takes up volume and leaves air in it.

In practice, a quarter perlite lets water drain faster and air return sooner after each watering. This is a clear advantage in a deep pot, where pure coco fibre settles and keeps a saturated zone at the bottom, and in any system where water returns often. It is a drawback if you water by hand once a day in midsummer: the grow medium will be dry before you are back.

How many times can it be reused?

Is coconut fibre a good alternative to peat?

Let us talk about your project

A question about this product or your setup? Our team will answer and advise you.

Email us Contact form

Interest-free instalment payments

Offered depending on the cart amount, at checkout.

Delivery in 2 to 15 working days

Depending on the products and shipping sites. Estimate by destination in the estimator on this page.

After-sales service 7 days a week by email or chat

Our team answers all your questions.

Shop responsibly

Become part of the change.

50 L coco fibre, natural or with perlite

The summary