Top Flow Hydroponic Systems TF6 RDWC Grow System - Professional Grade Professional Grade Systems - Yield and Growth Rate Far Exceed Industry Standards. Rapid Flow Rates and Oxygen Dissolution Produce White and Healthy Root Systems. Made with 3" UC Spin Tight Bulkheads. Expandable, Modular System Fits Any Growth Space and Lighting Configuration. 8-Gallon Growth Modules, 5.5" Heavy Duty Net Pots, 6 Root Management Containers, 2 General Hydroponics Dual Diaphragm Air Pumps, 633 Gallon Per Hour Submersible Water Pump, Auto-Topping Float Valve, 8 Large Round EcoPlus Air Stones, 50' Air Tubing, 30' Vinyl Tubing for Automatic Nutrient Changes. System Setup and Expert Growing Support for All Customers. Factory Tested and Calibrated in Santa Cruz, California, USA