Skip to product information
1 of 2

Alien RDWC 4 Pot 20L Black Series – Deep Water Culture

Alien RDWC 4 Pot 20L Black Series – Deep Water Culture

Regular price £385.00
Regular price Sale price £385.00
Sale Sold out

In stock

Free delivery on this item

Tank
Chiller Pump
Secure checkout
  • Visa
  • Mastercard
  • American Express
  • Apple Pay
  • Google Pay
  • PayPal
  • Klarna
  • Shop Pay
  • USDC
Free express delivery over £991–2 working days
  • 14-day returns
  • Price match promise
  • Free Wembley store pickup
  • Advice from the team: 020 3488 0419

Pairs well with

View full details

Description

Recirculating DWC performance sized for smaller tents

The Alien RDWC 4 Pot 20L Black Series brings the speed of recirculating deep water culture into a footprint that suits smaller grow tents and rooms. Constantly circulating nutrient-rich, oxygenated water through each of the four 20L plant sites drives rapid vegetative growth and strong root development, while all four pots drawing from one shared solution keeps EC and pH stable and heads off the uneven growth you get feeding plants separately. Roots suspended directly in oxygen-rich solution absorb water and nutrients far faster than in soil or coco, and the recirculating design keeps that solution moving rather than stagnant - avoiding the weak roots and nutrient imbalances that would otherwise hit flower density in bloom.

Key Benefits

  • Highly oxygenated root zone promoting strong, dense root mass
  • Consistent feeding across all four plant sites from one shared solution
  • Compact footprint ideal for smaller grow tents and rooms
  • Rapid vegetative growth and improved flowering performance
  • JET-STREAM SILENT 1.0 pump circulating up to 950 L/hr
  • Durable Black Series components built for reliable long-term use

How to Use

  • Assemble the system and connect all pots to the header pot using the supplied pipework.
  • Fill the system with water and add hydroponic nutrients to the manufacturer's feeding schedule.
  • Install an air pump with air stones to oxygenate the solution (30 L/min, not included; required for RDWC operation).
  • Place plants into net pots filled with clay pebbles or another suitable hydroponic medium.
  • Switch on the circulation pump to begin recirculating the solution.
  • Monitor pH, EC and water levels regularly through veg and flower.

Technical Specifications

  • Type: recirculating deep water culture (RDWC) system
  • Series: ALIEN Black Series
  • Pots: 4 x 20 L
  • Pot size: 33 x 33 x 34 cm
  • Minimum footprint: 110 x 70 cm (pots touching, without tank)
  • Plant centres: 50 cm recommended
  • Circulation pump: JET-STREAM SILENT 1.0, included in every option, fitted in header pot
  • Pump flow: 950 L/h
  • Pump power: 16 W
  • Pump supply: 240 V
  • Air requirement: 30 L/min
  • Air pump: not included (air stones and airline supplied)
  • Recommended tank: 100 L
  • Recommended chiller: rated for 150 L
  • Chiller connection: factory-fitted chiller fittings on header pot
  • Fittings: threaded 32 mm with rubber washers and nuts
  • Pipe: 32 mm green flow pipe, 19 mm return, 16 mm and 4 mm airline
  • Net pots: square
  • Growing medium: inert substrate, e.g. clay pebbles, in the net pots
  • Suggested veg time: 7-10 days
By sizeNo Tank / No Chiller PumpNo Tank / With Chiller Pump
SILENT 1.0, 950 L/h
Tank includedNo
Chiller pumpNot includedSILENT 1.0, 950 L/h
Dimensions110 x 70cm110 x 70cm
By size120L Tank / No Chiller Pump120L Tank / With Chiller Pump
SILENT 1.0, 950 L/h
Tank included120 L CAMO
Tank size (cm)40 x 40 x 80
Chiller pumpNot includedSILENT 1.0, 950 L/h
Dimensions110 x 70cm110 x 70cm

FREE Express Delivery on orders over £99. We aim to post same day on Express Delivery — order by 3pm Mon–Fri — and delivery takes 1–2 working days. A few harder-to-stock or large, bulky items can take a little longer — we'll tell you if that applies to your order. Heavy-item surcharges are always shown at checkout before you pay — we only ever charge what delivery costs us. Prefer to collect? Free pickup at our Wembley store.