Recirculating Deep Water Culture (RDWC) System

The Under Current® Recirculating Deep Water Culture (RDWC) System features the patented Sub-Current Culture® circulation method. This high-performance water culture system is unmatched in efficiency, layout versatility and ease of use. The Under Current® utilizes negative water pressure to recirculate oxygenated nutrient solution through the plant’s root zone ensuring pH and EC levels are uniform throughout the entire system.

The Under Current® is the cornerstone of the CCH2O Proven Production Approach when used with Cultured Solutions® Nutrients and the CCH2O Nutrient Dosing System.

This system includes:

  • *NEW* CCH2O Multi Mod Growth Modules with Drain Well
  • CCH2O 5.5″ Heavy Duty White Lids with Port Hole
  • CCH2O 5.5″ Heavy Duty Net Pots
  • CCH2O Easy Clean Manifolds with UC Spin-Tight Bulkheads
  • *NEW* CCH2O Add-Back Kit
  • *NEW* High Flow Aeration Manifold
  • *NEW* Air Pump Bank with CCH2O Air Flow Regulator
  • Premium Linear Air Pump(s)
  • Danner Mag-Drive™ Return Pump with 1″ Return Hose
  • Optional Drain Out Kit Available
  • Adjustable Float Valve with Reservoir Adapter Kit
  • Cultured Solutions™ XS Growers Pack
  • 3-Year Limited Warranty.


CCH2O Nutrient Dosing System

Complete System Automation and Control. Nutrient and pH Dosing with pre-programmed Cultured Solutions Feeding Schedules.

UC Parka - Cap & Gown

Designed to enhance the chilling efficiency of the Under Current systems by providing an insulating barrier from grow room atmospheric conditions.


Aquifer Reservoirs

The ideal companion to top-off your Under Current System.  Built for bulk nutrient and fresh water storage.  Designed to withstand tough environmental conditions.




Boneless Spacing

All Under Current® systems are available in a “Boneless” option. Boneless systems ship WITHOUT straight sections of piping allowing for custom plant spacing.


Remote Epicenter

All Under Current® systems are available with a “Remote Epicenter”option. This allows growers to place the Epicenter (Control Module) on the outside of their grow space or tent.