Black perforated plastic hydroponic growing basket, seen at three-quarter angle on a white background

Black 6.5 cm hydroponic growing basket seen from the front in close-up, showing rim and side slots

Petit panier de culture hydroponique noir de 3,5 cm au rebord, vu de face sur fond blanc

Grand panier de culture hydroponique noir de 11 cm au rebord, vu de face sur fond blanc

Panier de culture de 14 cm en plastique noir rigide, vu de trois quarts, collerette percée sur le bord

Scale diagram of the 5 cm and 6.5 cm baskets showing the position of the rockwool cube

Growing baskets in several diameters lined up side by side for size comparison

Close-up of the side slots on a growing basket filled with clay pebbles

Filling a growing basket with clay pebbles above a grow bed

Schéma des cotes du panier de culture de 14 cm : 14 cm au rebord, 10 cm de hauteur, perçage du couvercle à 13 cm

Hydroponic growing pot: 5 or 6.5 cm

3,90 €

Quantité	Prix	Prix au unité	vs 10
10	3,90 €	0,39 €	—
25	7,90 €	0,32 €	−18 %
50	13,90 €	0,28 €	−28 %
100	24,90 €	0,25 €	−36 %

1,30 € × 3 sans frais Klarna.

This black mesh pot holds the plant by the rim in soilless culture, with the roots descending through the slots into the nutrient solution. It is available in 5 cm and 6.5 cm diameter — choose according to the hole size in your support.

Réf. NP35-10·Hydroponic pot

Diamètre : Ø 3,5 cm

Ø 3,5 cm

Ø 5 cm

Ø 6,5 cm

Ø 11 cm

Ø 14 cm

Quantité : 10

Service client 7/7 par mail

Livraison sous 2 à 15 jours ouvrés

Paiement 100 % sécurisé

The summary

What you receive: 10, 25, 50, or 100 slotted baskets in the diameter of your choice.
Which diameter: 5 cm for seedlings and short-cycle salad crops, 6.5 cm for an established plug or a plant purchased in a module.
Where they fit: NFT, DWC, raft, jar lid, any drilled support that holds the rim.
Before ordering: measure the hole in your support — that is what determines the diameter.

Slotted pots for NFT, DWC and raft systems, in packs of 10, 25, 50 or 100

The slotted basket holds the plant cantilevered over the edge of the tank or lid, allows roots to pass through its slits into the water film, and blocks the hole through which light would otherwise enter. This third function determines how clean the system stays, because light falling on a nutrient solution produces algae within two to three weeks. Make sure you also block any unused spaces in your support, using an empty basket filled with clay pebbles, exactly as you would for an occupied space.

📏 Choosing the diameter

Choosing the right diameter comes down to two measurements. First, the mature size of the plant: a basket that is too narrow will constrict the crown of a full-grown lettuce, and what matters here is root geometry, a fine, fibrous root system will fit where a taproot hits the bottom. Second, the hole in your support, and that is the deciding factor: the basket rests on its rim, so the rim must not pass through the hole while the body does. Take a ruler, measure both, and you will know exactly which diameter to order.

🪨 Filling the basket

Rockwool

The 36 mm cube fits the 5 cm slot and holds the seedling upright from germination. It can be handled without breaking the root.

Clay pebbles

They give roots plenty of air, rinse clean, and can be reused. They retain little water if your pump stops.

Germination sponge

It retains moisture for longer and fits straight into the basket. It is practical for small batches.

Coco fibre

It is poorly suited to a basket through which the current flows, as the fine particles migrate and end up in the pump.

The cube to get started, the clay pebbles to anchor

At the same time, choose rockwool cubes for starting seedlings and clay pebbles to support and aerate around them. The cube holds the seedling upright from germination, and the pebbles allow plenty of air to reach the roots. Allow one pot per position plus a small spare, since a broken pot puts a space out of action. Choosing your grow medium is a decision made at the same point.

The basket that doesn't touch the water

The most common mistake when starting out is placing the basket without checking that the growing medium actually reaches the water film. A young plant does not yet have roots long enough to pass through the basket, and it will dry out within 48 hours if nothing bridges the gap. Push the rockwool cube right to the bottom of the basket, and maintain a water level that keeps this base moist during your first few days of growing, you can lower it afterwards to allow air to reach the roots.

The question of quantity should be settled before that of diameter, as it determines which pack size to choose. Count one basket per slot in your support, then add around 10% to your order as a buffer, since a basket can crack when removing a root ball or go missing during cleaning. A pack of 100 works out significantly cheaper per unit than a pack of 10, and these baskets do not deteriorate over time, so buying ahead in bulk makes sense. Don't forget the empty slots, which also need a blanking basket.

♻️ Clean and reuse

A basket will last several seasons provided it is cleaned between crops. Remove the entire root ball rather than pulling on roots caught in the slots, leave it to soak overnight in clean water, then brush off the brown film that forms on the plastic. This biofilm is not harmful in itself, but it harbours spores and pest eggs from one crop to the next. A rinse with diluted white vinegar is sufficient in most cases; a stronger disinfectant should be reserved for the aftermath of a pythium attack or seedling damping-off.

🌱 The limits of the basket

A basket is not a pot, and this confusion costs many beginners several crops. It retains neither water nor nutrients, since its purpose is precisely to let both pass through freely, meaning a plant placed in a basket outside a circulating system will dry out within a few hours. It also cannot support a tall plant at full maturity, a tomato plant loaded with fruit requires an independent stake fixed to the structure. Think of it as the interface between your plants and your system, not as a growing container.

Technical specifications

The basket

Rim diameter: 5 or 6.5 cmThis is the rim diameter, not the body diameter or the hole in your support.
Height: 5 or 5.5 cm5 cm on the 5 cm diameter model, 5.5 cm on the 6.5 cm
Material: Perforated black plasticFood-grade polypropylene on the 5 cm version. The carbon black used to colour the material limits UV degradation.
Wall: Split along its full heightThe slots allow roots to emerge and nutrient solution to pass through

Use

Compatible grow media: Rockwool, clay pebbles, foamThe 36 x 36 x 40 mm rockwool cube fits into the 5 cm basket
Target systems: NFT, DWC, raft, jarAny perforated support whose hole accepts the body of the basket and retains its rim
Reuse: 5 to 10 cyclesCleaning the slots between crops is what determines service life
Colour: BlackThe basket seals the hole in the support and keeps light out of the nutrient solution

The packs

Quantities: 10, 25, 50 or 100Each quantity is available in both diameters
Pack weight: 70 g to 800 gFrom a pack of 10 to a pack of 100, depending on the diameter

To budget for separately

Grow medium: Rockwool or clay pebblesThe 36 mm cube fits inside the 5 cm net pot
Nutrient solution: Growth fertiliser for soilless growingIn aquaponics, the pond water replaces it, supplemented with chelated iron

4 further specifications are available in the detailed view.

In the box

10 to 100 slotted baskets, depending on the pack chosen

Diameters, heights and material taken from supplier descriptions, recorded on 09/09/2026. Measure the hole in your support before ordering in quantity.

The 5 cm or the 6,5 cm?

The same basket in two diameters. What separates them is the size of the hole in your support and the stage of the plant you are placing in it.

The hole in the support sets the size, the root ball confirms it A wider basket will not fit a five-centimetre hole. A rootball that has already formed will not fit the smaller basket.

	Rim diameter (cm)	Height (cm)	36 mm rockwool cube	Already-developed root ball	Seedlings and fast-cycle salad leaves	Plant purchased in a pot	Price
Recommended Ø 5 cm, pack of 25Your choice	5 cm	5 cm	Yes	No	Yes	No	9,90 €
Ø 6,5 cm, pack of 25Your choice	6,5 cm	5,5 cm	Yes	Yes	Yes	Yes	17,90 €

Ø 5 cm, pack of 25Recommended

The dimensions

Rim diameter (cm)5 cm

Height (cm)5 cm

What goes inside

36 mm rockwool cubeYes

Already-developed root ballNo

For what purpose

Seedlings and fast-cycle salad leavesYes

Plant purchased in a potNo

The price

Ø 6,5 cm, pack of 25

The dimensions

Rim diameter (cm)6,5 cm

Height (cm)5,5 cm

What goes inside

36 mm rockwool cubeYes

Already-developed root ballYes

For what purpose

Seedlings and fast-cycle salad leavesYes

Plant purchased in a potYes

The price

Dimensions taken from supplier specifications on 05/09/2026.

Estimate your
delivery time

Parcel weighing 0.05 kg per unit and up to 1.5 kg for the 200-basket pack, dispatched to a collection point or to your home address, as chosen at checkout. The baskets are shipped nested together. The exact shipping cost is shown in the basket.

Frequently asked questions

6 questions

6 key questions

Which diameter to choose, 5 cm or 6.5 cm?

The 5 cm size is the entry-level format for seedlings. It holds a 36 mm rockwool cube or a germination sponge, supports a lettuce, a herb or a young strawberry plant through to harvest, and it is the diameter that most drilled lids on the market are designed for.

The 6.5 cm size is the grow-on format. It accepts an already-formed rootball, a plant purchased in a pot or a plant being kept for several months, and it copes better with a large root system. It requires a wider hole: it is the hole that determines the choice, not the plant.

Will these net pots fit my support?

What goes inside — clay pebbles or rockwool?

Grow medium	Water retention	What it changes
Rockwool	high	Seedlings establish straight, and the cube can be handled without breaking the root
Clay pebbles	low	Plenty of air at the roots, easy to rinse and reuse, dries out quickly if the pump stops
Germination sponge	high	Fits straight into the basket as is — convenient for small batches
Coco fibre	high	Poorly suited to open-mesh baskets with water flowing through them — fine particles migrate into the pump

Many systems combine the first two: the cube for propagation, pebbles around it for support and aeration. Our rockwool cubes and our clay pebbles are sized to fit these baskets.

Which plants truly thrive in a 5 cm basket?

Those that meet three criteria — and there are more of them than you might think:

a short cycle, four to six weeks, which frees up space quickly;
fibrous roots, fine and spreading, which are comfortable within the volume of the basket;
a low overall mass above the anchor point.

Lettuce, spinach, rocket, lamb's lettuce, chard, kale, basil, parsley, chives, coriander, mint and strawberry all fit the bill. Carrots and beetroot do not — their taproots hit the bottom of the basket; large-fruited tomatoes don't either, as they act as a lever. Our article on what to grow in hydroponics through the seasons provides the full planting calendar.

Can they be reused, and how many times?

Why is green algae appearing in my system?

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Hydroponic growing pot: 5 or 6.5 cm

The summary