An incredible value for your hydroponic dollar, the EcoFlo DWC is an awsome system. Don't let the small size deceive you. The DWC gets the job done by delivering the highly oxygenated nutrient enriched solution directly to the roots of the plants.
(Air Injection Technology is manufactured by Modular Hydro and will out perform an airstone.)
With the addition of Air Injection Technology your Eco Flo DWC will enjoy increased growth rates by providing millions of oxygen enriched micro air bubbles to the nutrient solution.