Alien RDWC 21 Pot 36L Black Series
Alien RDWC 21 Pot 36L Black Series
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Order by 3pm Mon–Thu for next-working-day delivery · FREE delivery over £50 · Free Wembley pickup
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Description
High-capacity recirculating DWC built for uniform canopies and heavy yields
The Alien RDWC 21 Pot 36L Black Series is a large recirculating deep water culture system for growers running bigger indoor setups who need fast, even growth across a whole crop. By constantly circulating oxygen-rich nutrient solution between all 21 plant sites, it holds a stable root zone that drives rapid root development, vigorous vegetative growth and heavy flowering. With a 550L system volume fed from a 280L CAMO® reservoir, pH and EC stay balanced across the whole system, heading off the uneven growth, weak roots and nutrient swings that plague large unbalanced feeds. It arranges within a minimum footprint of 3.4m x 1.35m or expands to 5.25m x 1.9m, uses 60-75cm plant centres, and the heavily oxygenated environment lets you run short 10-14 day vegetative periods.
Key Benefits
- 21-site RDWC design for large grow tents and hydroponic grow rooms
- 550L system volume recirculated for consistent uptake across every plant
- 280L CAMO® reservoir stabilises pH and EC across the whole system
- JET-STREAM™ SILENT 2.0 pump moves up to 2150 L/hr at just 32W
- Strong root oxygenation for dense flowering and improved bud density
- 60-75cm plant centres for a uniform, easily managed canopy
Why do big crops grow unevenly on separate feeds?
Running plants on separate or hand-managed reservoirs invites nutrient fluctuations, pH drift and weak root systems, so some plants race ahead while others lag. Recirculating a single large body of aerated solution keeps EC, pH and dissolved oxygen the same at every site, so the whole canopy grows together and finishes together.
How to Use
- Position the system in your grow tent or grow room to the recommended footprint and plant spacing.
- Connect all pots with the supplied pipework and link them to the CAMO® reservoir.
- Install the JET-STREAM™ SILENT 2.0 pump in the reservoir to circulate solution throughout the system.
- Fit a suitable air pump such as the recommended JET-80 (80 L/min at 55W) to aerate the root zones.
- Fill the reservoir with water and add nutrients formulated for RDWC.
- Set and maintain pH and EC to suit the stage, from vegetative growth through bloom.
- Keep aeration strong and water temperature stable, using a chiller if needed, to maximise uptake, rooting and yield.
Important: air pump must be purchased separately.
Technical Specifications
- Plant sites: 21 x 36L pots
- System volume: 550L
- Reservoir: 280L CAMO®
- Circulation pump: JET-STREAM™ SILENT 2.0, up to 2150 L/hr, 32W
- Recommended air pump: JET-80, 80 L/min, 55W (sold separately)
- Minimum footprint: 3.4m x 1.35m
- Maximum footprint: 5.25m x 1.9m
- Plant centres: 60-75cm
- Suggested veg period: 10-14 days

Free next-day delivery on orders over £50 (order by 3pm Mon–Thu). 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.

