I replaced my Rainmachine with a Netro but I cannot configure it to do what the Rainmachine did. I live in Austin And can only water 1 day a week. Water is incredible expensive so I  cannot use Smarzone because my water bill will be too high. I want to run each zone for 20 min once per week and not water when rain is expected or it is raining. Netro does seem to be able to do this. Any suggestions?