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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 19 Reviews
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Michelle N.
United States United States

Artisun Technology RDWC system is simply top notch and a great deal too.

This system is awesome! simply put. Assembly was a piece of cake and easy. No tools needed, it came with its own wrench and that is 'just super convenient. Shipping was on point. We actually received the system 2 days ahead of schedule. System was packaged perfectly and had no damage at all. Support from Artisun has been top notch period. Both Chris's are super friendly and mega helpful and also super approachable and easy to talk to. Bottom line: This system is worth every penny, and its upgradable as well. Alot of other systems cost much more but seemingly offer less. The pumps included in this system are brand name and top notch as well. No corners were cut with the design and building of this system, and thats a huge plus. Thank you Artisun Technology for ALL of your top-notch help :) I'm one happy customer!

United States United States

Amazing product, even better customer service!!

Super high quality product. I had a bunch of others in my amazon cart for weeks determining the route to go here. I found a stark line between the 150 dollar vivosun stuff w/ grommets and 1/2 tubing connecting buckets vs the struggle of multiple plants in single non recirculating buckets and the super high end stuff that has PVC sized tubing but costs 2-10 grand. Enter the Artisun!! Ultimately your plants dont have a clue if your water is running through a 10 thousand dollar system or a 500 dollar system, as long as its STILL FLOWING. This has awesome circulation, no leaks, everything you need to hit the ground RUNNING. These guys rock, they care about your experience and your results. Buy with confidence before they explode and realize they can charge way more for this stuff!!!!!!!!

A Artisun Technology, LLC Customer
United States United States

Exceptional System

I have been researching for my RDWC system for a few weeks. My requirements were reliability and simplicity, money not an object, and this system I have both of these requirements satisfied 100%. I just purchased my second one, identical. IMO there is no other better quality, simplicity, cost value out there.

Jason D.
United States United States

Great iteam

Very well built, comes with everything you could need to start, I had one net pot break in shipment and they sent another promptly without hesitation, Great customer service and product. Would definitely recommend

David J.
United States United States

Everything I was hoping

100 percent loving the system