Hydro Flow? DeepRoot Irrigation? Drip Emitters deliver water and nutrients directly to the root zone. Surface watering can lose enormous amounts of water from run off and evaporation. They also promote downward root growth. This will eliminate J-Roots and shallow root development. DeepRoot Irrigation? Drip Emitters connects to common emitters, making installation a breeze. This award winning design can save water, time and money. Choose from 6 or 12 in.