19 L RDWC 2.0 culture tank, white on the outside and black on the inside, pre-drilled for the network, sold without lid

19 L RDWC PRO growing tank, white and black double wall, drilled for the PRO network, sold without lid

Hydroponic grow bucket 19 L

Name: Hydroponic grow bucket 19 L
Brand: Growrilla
SKU: SI-GRC50VPAS19
Price: 15.9 EUR
Availability: InStock

15,90 €

This 19-litre tank holds a single plant with its roots submerged, on an RDWC network. Its double-wall food-grade polypropylene construction is black on the inside to block out light, and the tank measures 30 cm in diameter by 33 cm tall.

The version 2.0 connects to a 32 mm circuit, the PRO version to a 50 mm circuit. It replaces a damaged tank or adds to an existing network.

Ref. SI-GRC50VPAS19·RDWC part

Compatibility : Rdwc pro compatible

RDWC PRO compatible

RDWC 2.0 compatible

Customer support 7 days a week by email

Delivery within 2 to 15 business days

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The summary

What it is: the 19 L tank in which a single plant grows, roots submerged, on an RDWC system.
Two versions: drilled to 38 mm for a 2.0 circuit, drilled to 58 mm for a PRO circuit.
Dimensions: 30 cm diameter, 33 cm tall, 19 litres.
When to order one: to expand an existing system, or to replace a cracked tank.

19 L double-walled tank, for adding or replacing a RDWC growing pot

The Growrilla 19 L hydroponic grow bed is a 19 litre tank, 30 cm in diameter and 33 cm high, which holds a single plant with its roots submerged, on an RDWC network. Its double wall, black on the inside to discourage algae, is available with a 38 mm drilling for a 2.0 circuit and 58 mm for a PRO circuit.

This is the tank in which your plant grows, with its roots immersed in the solution. The rest of the system surrounds it: the pump circulates the solution through it, the air stone maintains the dissolved oxygen there, and the fittings connect it to its neighbours. A 19 L tank for a single plant leaves the root system room to spread, and this volume cushions a dosing error, because the same dose is diluted in more water.

🪣 Two different drillings

This is the point you need to check before ordering, and it cannot be seen in a photo. Both versions have the same capacity, the same external dimensions and the same material; they differ in the diameter of the two holes drilled in line in their wall. The version for a 2.0 circuit is drilled at 38 mm and takes 32 mm rigid pipe through a seal; the one for a PRO circuit is drilled at 58 mm and takes 50 mm pipe.

Measure the pipe

A tube with a 32 mm outer diameter indicates a 2.0 circuit; a 50 mm tube indicates a PRO circuit.

Or measure the hole

The hole is 38 mm on a 2.0 tank and 58 mm on a PRO tank.

Or re-read the invoice

The name of the original kit, 2.0 or PRO, indicates the generation of the circuit.

One diameter per generation

No fitting allows a 2.0 tank to be connected to a PRO circuit, or the other way round.

🕶️ The double wall

The tank is moulded in two layers, black inside and white outside. The black blocks out light, and without light algae cannot take hold in water that is nonetheless rich in nutrients. The white reflects the radiation from the lamps and limits heating of the solution, which matters in a closed grow tent where heat builds up. The double wall only protects the sides of the tank, however: light gets in through a badly seated lid, through a basket smaller than its hole, or through a pipe passage left open. So check that the tank is properly closed after each transplanting, while your hands are still in there.

Place each tank at the same level as its neighbours

In an RDWC system, the tanks communicate through their linking pipes, so the solution reaches the same level in all of them, as in communicating vessels. A tank set higher than the others therefore holds less solution, and your plant has less water available than its neighbours. Once filled, the tank weighs around 19 kg: place it on a level, load-bearing floor, and check it with a spirit level before filling rather than afterwards.

The extension unit, to add a complete growing slot

If you are adding a position rather than replacing a cracked tank, the pot extension delivers the same tank with its drilled lid, its 14 cm basket, its two seals, a connecting tube and its airstone. All these parts are matched in advance to the diameter of your circuit, which saves you from discovering a mismatched diameter at the moment the circuit is opened.

🔧 Replace rather than repair

A cracked tank should be replaced, because polypropylene is hard to glue and a repair will not last on a wall carrying 19 L of water. That is also why the tank is sold on its own: a knock in transit or a dropped tool should not force you to buy a whole system again. Lower the water level in the system below the holes, remove the two connecting pipes, transfer the plant and its basket, then slide the new tank into the same place. Take the opportunity to fit new seals in its two holes, since you have the circuit open.

💧 Filling with water

A new tank is tested with clear water before it receives any plants. Fill the system until the connecting tubes are covered by about 1 cm, then wait a few minutes, watching around each joint: a drop beading up is visible at this stage, whereas it goes unnoticed once the lid is on. Then let the system run for 12 to 24 hours before transplanting. This way you check that the solution circulates all the way to the new tank, and that its level matches the others at the base of the baskets.

Technical specifications

The essentials

Capacity: 19 litres
Dimensions: 30 cm diameter, 33 cm tall
Material: Food-grade polypropylene
Construction: Double-walled, black and whiteBlack on the inside to block light, white on the outside to reflect the light from the lamps.

What it sits on

Version RDWC 2.0: Bore 38 mmThe circuit connected to it runs on 32 mm pipe.
Version RDWC PRO: Bore 58 mmThe circuit connected to it runs on 50 mm pipe.

Drillings and origin

Drill holes: 2, in lineEach one receives a gasket through which the connecting tube passes.
Origin: Italy, Robassomero

To budget for separately

Lid: 1 drilled lid for basket
Basket and grow medium: 1 14 cm basket with growing medium
Oxygenation: 1 air stone per tank
Watertightness: 2 seals in the correct diameter

4 further specifications are available in the detailed view.

In the box

1 double-walled 19 L growing tank, drilled in line to the diameter of the chosen version.

Capacity, dimensions, material and drilling taken from the manufacturer's component pages, on 07/10/2026. Oxygen levels: USGS saturation tables.

Manufacturer and product safety

Manufacturer: Growrilla di Milone Giulio
Postal address: Via Fiano 207, 10070 Robassomero (TO), Italie
Contact: info@growrillahydroponics.com
Website: growrillahydroponics.com

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

Which tank version?

Both tanks are identical in capacity, dimensions and material. This table only compares what determines the connection type.

Don't order at random The two tanks look identical and cannot be fitted to the same circuit. These three questions can be answered with a tape measure or an invoice.

	Pot drilling (mm)	Circuit pipework (mm)	Spare push-fit washer	Original kit	Price
Recommended Compatible RDWC 2.0Your choice	38 mm	32 mm	32 mm	RDWC 2.0	13,90 €
Compatible RDWC PROYour choice	58 mm	50 mm	50 mm	RDWC PRO	15,90 €

Compatible RDWC 2.0Recommended

How to identify the generation

Pot drilling (mm)38 mm

Circuit pipework (mm)32 mm

Spare push-fit washer32 mm

Original kitRDWC 2.0

Compatible RDWC PRO

How to identify the generation

Pot drilling (mm)58 mm

Circuit pipework (mm)50 mm

Spare push-fit washer50 mm

Original kitRDWC PRO

Drilling dimensions and pipe diameters noted from the manufacturer's component pages on 07/10/2026.

Estimate your
delivery time

A 19 L tank takes up a considerable amount of space for a modest weight: it is shipped in a bulky parcel that cannot be delivered to a letterbox. Orders are dispatched from the workshop in Robassomero, near Turin. The exact shipping costs and final delivery times are displayed in the basket once the delivery address has been entered. Outside the European Union, import duties and taxes remain the responsibility of the recipient.

Frequently asked questions

6 questions

6 key questions

How do I know which version to order?

Are the two versions interchangeable?

Is the tank enough to add a pot to the system?

Is a specific lid required?

Can it be used on its own, without a circuit?

Can it stay outdoors?

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Hydroponic grow bucket 19 L

The summary