Under Current Evolution 9 XL

NUMBER OF ROWS: 3
NUMBER OF SITES: 9
PLANT SPACING & MODULE SIZE: 25″ Centers / 8 Gallon

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.


What's Included with the Under Current Evolution 9 XL?

  • 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
  • CCH2O Add-Back Kit
  • High Flow Aeration Manifold
  • 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. 

Under Current System Options

*Boneless Spacing Option: All Under Current systems are available in a “Boneless” configuration. Boneless systems ship WITHOUT straight sections of piping allowing for custom plant spacing.

*Remote Epicenter Option: 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.

*Please note: Both of the above-noted options require the separate purchase and installation of PVC pipe. If you are interested in these options, please call us at 1-719-249-0550, and we will be glad to assist.


UCE9XL Recommendations for Use

GROW AREA (FEET / METERS): 10′ x 10′ / 3.05m x 3.05m
LIGHTING (HORIZONTAL): 4 X 600W
LIGHTING (VERTICAL): N/A
WATER CHILLER SIZE* (HP): 1/10 – 1/6 HP
RESERVOIR (GALLONS / LITERS): 75 / 300
VEG TIME (WEEKS/IN.): 2-3 weeks / 18″-24″

*General Recommendation - Check Manufacturer's Specifications for proper chiller sizing.