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

Small black hydroponic growing basket, 3.5 cm at the rim, seen from the front on a white background

Large black hydroponic growing basket, 11 cm at the rim, seen from the front on a white background

14 cm rigid black plastic growing basket, seen at three-quarter angle, with a perforated rim collar

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

Filling a growing basket with clay pebbles above a grow bed

Dimension diagram of the 14 cm growing basket: 14 cm at the rim, 10 cm in height, lid drilling at 13 cm

Black 5 x 7 cm grow basket with its dimensions: 5 cm body, 7 cm collar, 7 cm height

Panier de culture de 20 cm en plastique noir rigide ajouré, rebord large, sur fond blanc

Hydroponic grow pot, 3.5 to 14 cm

$5.13

Quantity	Price	Price per unit	vs 5
10	$5.13	$0.51	−87 %
25	$9.01	$0.36	−91 %
50	$15.85	$0.32	−92 %
100	$28.40	$0.28	−93 %
20	$10.15	$0.51	−87 %
5	$19.27	$3.85	—

This black slotted basket holds the plant by its rim in soilless growing, and the roots pass through the slots towards the nutrient solution. It comes in 3.5, 5, 6.5, 8, 11 and 14 cm rim diameters, to be chosen according to the hole in your support, as well as in a tall 5 x 7 cm version for 100 x 80 mm NFT channels.

Ref. NP35-10·Grow basket

Diameter : Ø 3.5 cm

Ø 3.5 cm

Ø 5 cm

Ø 5 cm, h. 7 cm

Ø 6.5 cm

Ø 8 cm

Ø 11 cm

Ø 14 cm

Ø 20 cm

Quantity : 10

Customer support 7 days a week by email

Delivery within 2 to 15 business days

100 % secure payment

The summary

What you receive: 10, 25, 50 or 100 slotted baskets, in the diameter of your choice.
Which diameter: 3.5 cm for cuttings, 5 cm for seedlings and lettuces, 5 x 7 cm for a 100 x 80 mm NFT channel, 6.5 cm for a formed plug, 8 cm for a 3-inch basket system, 11 cm for a large plant, 14 cm for an RDWC pot.
Where they fit: NFT, DWC, RDWC, raft, jar lid, any drilled support that holds the rim.
Before you order: measure the hole in your support, as it determines the diameter.

Perforated baskets for NFT, DWC, RDWC and raft systems, in packs of 10 to 100

The hydroponic net pot is a black slotted basket that holds the plant by its rim in soilless growing, while the roots pass through the slots towards the nutrient solution. It is available in 3.5, 5, 6.5, 8, 11 and 14 cm diameters, as well as a 5 x 7 cm version for 100 x 80 mm NFT channels. Choose the diameter to match the hole in the support.

The slotted basket holds the plant in an overhanging position on the wall or lid, it lets the roots pass through its slots towards the film of water, and it plugs the hole through which light would enter. This third function decides how clean the system stays, because light on a nutrient solution produces algae within 2 to 3 weeks. So also plug the unused places in your support, with an empty basket filled with clay pebbles, exactly like the occupied places.

📏 Choosing the diameter

You choose the diameter on two measurements. First, the adult size of the plant, since a basket that is too narrow strangles the crown of a salad that has reached maturity. Second, the hole in your support, which matters more, since the basket rests on its rim: the body must fit through the hole, and the rim must stay seated on top. Take a ruler, measure, and you will know which of the seven sizes to order: the 3.5 cm for cuttings and the small holes of a cutting tray, the 5 and 6.5 cm for channels and towers, the taller 5 x 7 cm for 100 x 80 mm NFT channels, the 8 cm for 3-inch basket systems, such as the hydroponic channel system or the 5-plant aeroponic pot, the 11 cm for a tomato or a pepper set in the lid of a tank, the 14 cm for a plant grown in an RDWC pot, whose lid is drilled at 13 cm.

🪨 Filling the basket

The basket retains neither water nor nutrients, since its role is precisely to let both through: a plant placed in a basket outside a circulating system dries out within a few hours. It is therefore the filling that keeps moisture around young roots until they reach the solution, and you choose it according to your starting point, seed, cutting or an already formed plant. For direct sowing, the germination sponges slide into the basket as they are. Nor does the basket support a tall plant at maturity: a tomato plant laden with fruit needs a separate stake, which you fix to the structure.

Rockwool

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

Clay balls

They give the roots plenty of air, rinse clean and can be reused. They hold little water, so the roots dry out quickly when the pump stops.

Germination sponge

It retains moisture for longer and slots straight into the basket. It is handy for small batches.

Coconut fiber

It is poorly suited to a basket with flow running through it, as the fines migrate and end up in the pump.

The cube to start, the clay pebbles to secure

Choose at the same time some rockwool cubes to start the seedlings and some clay pebbles to wedge and aerate around them. The cube starts the seed without any soil that would spread through the system, and the pebbles poured around it keep the plug upright as the plant gains weight. Allow one basket per position on your support, plus a small reserve, since a broken basket leaves a position out of use.

The basket that doesn't touch the water

Check that the growing medium in the basket reaches the film of water. A young plant does not yet have roots long enough to pass through the basket, and it dries out within 48 hours if nothing bridges the gap. So push the rockwool cube right down to the bottom of the basket, and keep a water level that wets this base during your first days of growing, even if you lower it afterwards to give the roots some air.

♻️ Clean and reuse

A basket will serve you for several seasons if you clean it between crops. Remove the whole plug rather than pulling on the roots caught in the slots, leave it to soak overnight in clean water, then scrub off the brown film that builds up on the plastic. This biofilm is not dangerous in itself, but it can carry over, from one crop to the next, the spores of root rot pathogens, such as pythium. A rinse in vinegar water is enough in most cases, with a stronger disinfectant reserved for after an attack of pythium or damping off.

Technical specifications

The basket

Rim diameter: 3.5 to 14 cmThis is the diameter of the rim. The 8 cm corresponds to 3-inch baskets, the body of the 11 cm measures 8 cm, and the 14 cm sits in a 13 cm hole. The 5 x 7 cm has a 5 cm body, a 7 cm collar and is 7 cm tall, for the 5 cm holes of 100 x 80 mm NFT channels
Height: 3.5 to 10 cm3.5 cm on the 3.5 cm, 5 cm on the 5 cm, 7 cm on the 5 x 7 cm, 5.5 cm on the 6.5 cm, 7 cm on the 11 cm, 10 cm on the 14 cm
Material: Perforated black plasticFood-grade polypropylene for the 5 cm pot, Italian-made polypropylene for the 8 cm pot, and reinforced food-grade polypropylene, also Italian, for the 14 cm pot. The carbon black used to colour the material slows UV degradation.
Wall: Split along the full heightThe slots allow roots to grow through and nutrient solution to flow past

Use

Compatible grow media: Rockwool, pebbles, spongeThe 36 x 36 x 40 mm rockwool cube fits into the 5 cm basket
Target systems: NFT, DWC, RDWC, raftAny perforated support whose hole accepts the body of the basket and holds its rim. The 14 cm size does not fit a NFT gutter.
Reuse: 5 to 10 cyclesCleaning the slots between crops is what determines the service life
Colour: BlackThe basket covers the hole in the support and keeps light out of the nutrient solution

The packs

Quantities: 10, 25, 50 or 100Available in 3.5, 5, 6.5 and 8 cm, every quantity is offered; the 5 x 7 cm is sold in packs of 20
Large diameters: 11 cm in packs of 10 or 50, 14 cm in packs of 10, 25, or 50A wider basket takes up more space, which is why packs contain fewer units.

To budget for separately

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

4 further specifications are available in the detailed view.

In the box

10 to 100 mesh pots, depending on the pack chosen

Diameters, heights and materials taken from the manufacturers' data sheets on 09/09/2026, 30/09/2026, 01/10/2026, 07/10/2026 and 08/10/2026. Measure the hole in your support before ordering in quantity.

Which diameter basket?

The same slotted basket in six diameters. The hole in your support determines the size, and the size of the plant settles the choice between adjacent sizes.

The support orders, the start confirms A basket is chosen to match the hole that receives it. The plant's starting size then distinguishes between neighbouring sizes.

	Ø 3.5 cm, pack of 10Your choice	Recommended Ø 5 cm, pack of 10Your choice	Ø 6.5 cm, pack of 10Your choice	Ø 8 cm, pack of 10Your choice	Ø 11 cm, pack of 10Your choice	Ø 14 cm, pack of 10Your choice
The dimensions
Rim diameter (cm)	3,5 cm	5 cm	6,5 cm	8 cm	11 cm	14 cm
Height (cm)	3,5 cm	5 cm	5,5 cm		7 cm	10 cm
What fits inside
36 mm rockwool cube	No	Yes	Yes	Yes	Yes	Yes
Recommended starting point	seed, cutting or small plug	seed or seedling cube	rootball or pot-grown plant	seed, cutting or cube wedged in clay pebbles	seed, cube or plug	plug or already-rooted cutting
For which medium
Common supports	propagation tank, mini greenhouse	NFT gutter, tower with small holes	raft, channel or medium-hole tower	gutter or aeroponic pot with 3-inch holes	tank lid with large holes	19 L RDWC pot, lid drilled at 13 cm
The price
Price	$5.13	$5.59	$9.01	$11.29	$13.57	$34.10

Ø 3.5 cm, pack of 10

The dimensions

Rim diameter (cm)3,5 cm

Height (cm)3,5 cm

What fits inside

36 mm rockwool cubeNo

Recommended starting pointseed, cutting or small plug

For which medium

Common supportspropagation tank, mini greenhouse

The price

Ø 5 cm, pack of 10Recommended

The dimensions

Rim diameter (cm)5 cm

Height (cm)5 cm

What fits inside

36 mm rockwool cubeYes

Recommended starting pointseed or seedling cube

For which medium

Common supportsNFT gutter, tower with small holes

The price

Ø 6.5 cm, pack of 10

The dimensions

Rim diameter (cm)6,5 cm

Height (cm)5,5 cm

What fits inside

36 mm rockwool cubeYes

Recommended starting pointrootball or pot-grown plant

For which medium

Common supportsraft, channel or medium-hole tower

The price

Ø 8 cm, pack of 10

The dimensions

Rim diameter (cm)8 cm

What fits inside

36 mm rockwool cubeYes

Recommended starting pointseed, cutting or cube wedged in clay pebbles

For which medium

Common supportsgutter or aeroponic pot with 3-inch holes

The price

Ø 11 cm, pack of 10

The dimensions

Rim diameter (cm)11 cm

Height (cm)7 cm

What fits inside

36 mm rockwool cubeYes

Recommended starting pointseed, cube or plug

For which medium

Common supportstank lid with large holes

The price

Ø 14 cm, pack of 10

The dimensions

Rim diameter (cm)14 cm

Height (cm)10 cm

What fits inside

36 mm rockwool cubeYes

Recommended starting pointplug or already-rooted cutting

For which medium

Common supports19 L RDWC pot, lid drilled at 13 cm

The price

Dimensions taken from the product descriptions on 05/09/2026, 30/09/2026, 01/10/2026 and 07/10/2026.

Estimate your
delivery time

Parcels weigh between 0.05 and 3.5 kg depending on diameter and pack size, dispatched to a collection point or to your door, your choice at checkout. Baskets are shipped nested together. The exact amount is shown at checkout.

Frequently asked questions

6 questions

6 key questions

Which diameter to choose, from 3.5 to 14 cm?

The 3.5 cm is for cuttings. It holds a cutting or a seed in the small holes of a propagation tray or a mini greenhouse while the roots form.

The 5 cm is the entry-level format for seedlings. It takes a 36 mm rockwool cube or a germination sponge, carries a lettuce or a herb through to harvest, and is the diameter that most perforated lids on the market are made for.

The 5 x 7 cm is the tall version of the 5 cm. At 7 cm high, it sits deeper in a 100 x 80 mm NFT channel, for which it was designed: its 5 cm body fits through the 5 cm holes, and its 7 cm collar rests on the edge.

The 6.5 cm is the format for transplanting. It accepts a rootball that has already formed, a plant bought in a pot or a plant you keep for several months. It needs a wider hole, so it is the size of the hole that decides between the 5 and the 6.5 cm.

The 8 cm fits systems with 3-inch baskets. It is the format for flow channels and for aeroponic pots drilled to this size: filled with clay pebbles, it steadies a rootball or a young plant and lets the solution, or the mist, reach the roots.

The 11 cm carries the large plants. Its 8 cm body leaves room for the roots of a tomato or a pepper, in the lid of a tray drilled with large holes.

The 14 cm is used in RDWC. At 10 cm high, made of reinforced food-grade polypropylene manufactured in Italy, it sits in a lid drilled to 13 cm, that of the 19 L pots of an RDWC system, and it takes a plant that is already rooted and will stay for several months. It does not fit in an NFT channel.

Will these baskets fit my holder?

What do you put in it, clay pebbles or rockwool?

Grow medium	Holds water	What it changes
Rockwool	a lot	The seedling grows straight, and the cube can be handled without damaging the root
Clay pebbles	little	Plenty of air at the roots, rinsed and reused, dries out quickly if the pump stops
Germination sponge	a lot	Slips into the basket as it is, handy for small batches
Coco fibre	a lot	Poorly suited to a slotted basket with water flowing through it, as the fines migrate into the pump

Many systems combine the first two: the cube to get started, with the pebbles around it to hold it steady and aerate. The shop's rockwool cubes and clay pebbles come in the size that fits these baskets.

Which plants actually fit in a 5 cm net pot?

Those that meet three conditions:

a short cycle, of 4 to 6 weeks, which frees up the space quickly;
fibrous roots, fine and hair-like, which make do with the volume of the basket;
a low mass above the anchor point.

Lettuce, spinach, rocket, lamb's lettuce, basil, parsley, chives and coriander fit this description; chard, cabbages and strawberry plants, grown for several months, call for a 6.5 or an 8 cm basket instead. Carrots and beetroot do not, as their taproot hits the bottom of the basket; nor do large tomatoes, which act as a lever. The article on what to plant in hydroponics through the seasons gives the calendar.

Can they be reused, and how many times?

Why are green algae appearing in my system?

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.

Hydroponic grow pot, 3.5 to 14 cm

The summary