Under Current Hydroponic System Info

What is the Under Current® 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.

Benefits of Growing in an Under Current®

Grow Trees

Yield More with Less. Reduce Plant Counts. More Production Per Plant.

Get Your Weight

Accelerated Growth Rates. Cut Veg Times. Heavy Yields = Heavy Profits.

Take A Vacation

Easy and Reliable. No Timers, No Guesswork. Reduced Labor & Maintenance.

Top-Shelf Results

Optimal Resin Output. Strong Terpene Profiles. Tests Clean.

Facility Proven

Ideal for Craft Cultivation. Trusted by Professional Growers Worldwide.

2019 Under Current® Updates

CCH2O Multi Mod

The Most Versatile Hydroponic Growth Module Available. Recessed Drain Well for Full System Drain. Raised Body for Thermal Cooling. Greenhouse Grade Heavy-Duty Construction. Water Level Marks and Smooth Interior for Easy Cleaning.

CCH2O Add Back Kit

Easily Add Back Nutrients and pH Adjustors to Your System Without Shocking Plants.

High-Flow Aeration Manifold

Even Distribution with More Air to Plants. Clean & Organized.

Air Pump Bank with CCH2O Air Flow Regulator

Easily Calibrate and Standardize Aeration Rates. Removes Air Pumps From Grow Space.

5.5” CCH2O Lids & Net Pots

Less Media. Easily Transfer Plants from Veg to Bloom.

Wider Center Aisle, 1” Return Hose & Bottom Drain Manifold

More Room Between Rows. High-Flow Circulation. Lower Volume to Prime Pump.

*OPTIONAL – UC Drain Out Kit

Utilizes the CCH2O Drop Tee to Connect the Multi Mod Growth Modules. Provides A Centralized Point for Evacuation When Performing a Full System Drain.

Under Current® System Options

Boneless Spacing*: 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*: All Under Current® systems are available with a “Remote Epicenter”. This allows growers to place the Epicenter (Control Module) on the outside of their grow space or tent.
*Please note: Both of these options require growers to purchase, cut and glue PVC.