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How to Choose an Under Current System

The Under Current ulitizes Sub-Current Culture (SCC), which employs peripheral negative pressure to recirculate highly oxygenated nutrient solution through the plant's root zone. The perpetual fluid motion supercharges the nutrients with dissolved oxygen, creating a hyper aerobic condition, perfect for explosive plant growth.

Their unique water culture application is unprecedented in both their layout versatility and ease of use. The Under Current consistently delivers awe-inspiring yields for any sized application.

Features:

  • Constant 24/7 Nutrient Circulation & Aeration
  • Increased Nutrient Efficiency
  • 50+ System Configurations
  • Expandable Modular Design
  • Designed to Accomodate Any H.I.D. Lighting Layout
  • Larger Yields With Fewer Plants
  • Commercial Grade Plastics
  • Lower Power Consumption
  • pH and EC/TDS is Uniform Throughout Entire System
  • Less Frequent Nutrient Change Outs
  • Easily Adaptable to Dosers, Top Off Reservoirs & Chillers
  • Includes Professional Quality Air & Water Pumps
  • Hand Crafted in California

Under Current Sizing Guide

Module Sizes

Currently there are three sizes available; the 8 gallon, 13 gallon and 35 gallon modules.



Plant Spacing

There are four spacing options for your system. The 18" plant centers are the most common and most practical for most users.



UC Systems -
18" Plant Centers


Recommended Veg Time:
1 - 2 Weeks or 12" - 18" Tall
Recommended Lighting:
1 x 600w per 4 Modules or
1 x 1000w per 6 or 9 Modules

XL13 Systems -
30" Plant Centers


Recommended Veg Time:
3 - 5 Weeks or 24" - 30" Tall
Recommended Lighting:
1 x 1000w per 4 Modules

XL Systems -
25" Plant Centers


Recommended Veg Time:
2 - 3 Weeks or 18" - 24" Tall
Recommended Lighting:
1 x 1000w per 4 Modules

XXL13 Systems -
40" Plant Centers


Recommended Veg Time:
4 - 6 Weeks or 30" - 36" Tall
Recommended Lighting:
1 x 600w per Module



System Layout:

UC Systems -
Two Rows


- Great for tents and narrow spaces.
- One row of horizontal lamps.
- 4 - 16 plant sites.

UCE Systems -
Three Rows


- Great for rectangular & residential spaces.
- Two rows of horizontal lamps.
- 9 - 24 plant sites.

UCDB Systems -
Four Rows


- Great for large scale & commercial spaces.
- Two rows of horizontal lamps.
- 16 - 32 plant sites.

Under Current Lighting Guide

UC Systems

Our most popular spacing - 18" plant centers require 1 x 600w horizontal lamp per every four Growth Modules, or 1 x 1000w horizontal lamp per every six or nine Growth Modules. Recommended veg time is 1 - 2 weeks.


XL Systems

XL13 Systems

Systems on XL - 25" plant centers or XL13 - 30" plant centers require 1 x 1000w horizontal lamp per every four growth modules. Recommended veg time is 2 - 3 weeks for XL systems and 3 - 5 weeks for XL13 systems.


XXL13 Systems

Systems on XXL13 - 40" plant centers require 1 x 600w horizontal lamp per every growth module or 600w vertical lamps between every set of four sites and around the outisde between every two sites. Recommended veg time is 4 - 6 weeks.


Pro Systems

Systems on 50"+ plant centers require 1 x 1000w horizontal lamp per every growth module or 1000w vertical lamps between every set of four sites and around the outside between every two sites. Recommended veg time is 6 - 8 weeks.

Under Current Installation Video

Spotlight - Current Culture H20 Hydroponics Systems



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