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Welcome to Artisun Technology

4 Site Recirculating Deep Water Culture (RDWC) Hydroponic System

$389.00 USD
: Choose either 4" or 6" Lid & Net Pot below: (4 inch)


Our 4 grow site RDWC system is perfect for a 4'x4' or 5'x5' space.

In a Recirculating Deep Water Culture (RDWC) System, water is actively pumped and circulated via a pump through the connected buckets from the central reservoir. The roots of the plants are continuously submerged in a nutrient and oxygen-rich water solution growing healthier plants with greater yields.

Four 5-gallon grow sites connected by 50mm PVC pipe to a shared reservoir with 5-gallon capacity. The system uses an air pump to feed a large air stone in each grow site that provides oxygen directly to the water around the plant's roots. The water pump circulates the oxygen-rich nutrient solution from the reservoir to each grow site, keeping the nutrient solution constantly mixed and evenly distributed across each grow site. No need to top up each grow site individually, simply top up the reservoir as needed. No additional tools required.


  • 4 x 5 Gallon Grow Site with 4” and 6" Net Pots
  • 1 x 5 Gallon Reservoir
  • 3 x Straight Connector PVC Tubes with Large Silicone Rubber Seals
  • 2 x Right Angle Connector Plastic Tubes with Large Silicone Rubber Seals
  • 1 x Water Level Control Pipe
  • 1 x 250 Gallon/Hour Submersible Recirculating Water Pump
  • 1 x Water Pump Supply Fitting Connector
  • 1 x 250 Gallon/Hour Submersible Drain Pump with Bottom Draw Fitting and 5’ Tubing
  • 1 x 15 L/min Capacity Super Quiet Air Pump
  • 30’ x Black Air Tubing
  • 4 x 2" x 4” Cylinder Air Stones
  • 1 x Fitting Wrench
  • Set Up Manual 
  • 3L Clay Pebbleshow does rdwc work

 Did you know?

  • RDWC systems grow healthier plants with greater yield potential by providing plants with continuous access to water, oxygen, and nutrients
  • Oxygenated water enables the plant roots to absorb nutrients more efficiently, increasing plant growth rate substantially
  • Nutrients are evenly distributed to each connected grow site and maintain a consistent level across all grow sites
  • The constant flow of water helps prevent algae, bacteria, and fungi from growing, while also keeping plant roots clean and healthy
  • RDWC systems are relatively low maintenance; Check nutrient solution often and top up the as needed through the central reservoir; change the solution in the reservoir every one or two weeks


Q: What size footprint is the system?

A: Artisun Technology's 4 Site RDWC System is designed to fit into a 4’x4’ or 5'x5' footprint.

Q: How frequently should you add nutrient solution to an RDWC System?

A: The reservoir level should be checked daily and topped up when needed. The nutrient solution consumption rate of the plants will depend upon the type, size and growth phase of the plants.

 Q: How frequently should you change the nutrient solution in an RDWC System?

A: The nutrient solution should be drained and replenished every 1-2 weeks depending upon on the type and size of the plants. 

Customer Reviews
4.9 Based on 14 Reviews
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Filter Reviews:
Jeff C.
United States United States


So far so good! First grow with new system. Had a few questions and received very prompt reply’s!! Good product & good service!

Jeffrey K.
United States United States

Great starter kit

The product is very well made. Air pump isn’t that strong so I upgraded to a 40w 70l/min pump and it produces plenty of bubbles now. Drain line is too short so I’ll have to go buy a longer one. Overall great product for the money.

Todd S.
United States United States

So far so good

First grow with system and all plants look great. Using AC Infinity setup with this system makes everything very easy.

Michael W.
United States United States

Great system

This is my first RDWC system and I could not be more pleased with it. Easy to assemble and maintain. 2 months into it and my plants are liking it very much too.

United States United States

Super easy to get started with an RDWC setup

Kit is super easy to install and get running. Instructions are good, shipping was as fast as a big heavy box can get to me. Was it more money than building something yourself? Yes. However Artisun was very responsive with questions I had and they helped me pick out the right kit for me. A month after transplanting some outdoor pepper plants into this setup and they are BOOMING with pods. I was so happy with this kit I bought two more for a total of 3.