• How do I know when I have watered enough?
  
  Tensiometers are available for that purpose.  You may also use a 12" long screwdriver to determine if it is wet or dry.
  
  
• How deep should the wetted area be?
  
  This depends upon the type of grass you have.  Most grasses, including Bermuda, have a deep root system, and the best results are obtained by watering deep to a depth of 12" or more.
  
  
• What if an emitter becomes plugged?
  
  Don't try to fix the emitter that is plugged.  Just uncover the emitter hose and install another one where it is dry.
  
  
• Should I keep the top of the ground dry?
  
  No.  Better to leave the system on long enough to bring water to the ground surface.
  
  
• What is the best spacing?
  
  This depends upon the soil type and other factors.  Let Submatic design your system for the best results.
  
  
• Should emitter lines be installed downhill?
  
  No.  Install the submain down the slope, and install the emitter lines across the slope.
  
  
• Can I fertilize through the system?
  
  Yes.  Submatic has several types of fertilizer injectors available for this purpose.
  
  
• Will roots grow into the emitters?
  
  Not likely, if you keep the soil at the root zone wet.