How often do these sprinkler systems come on? And about how much water output? I understand the morning is probably the best time-around 4am. As I understand one inch per week is good; and to do it only once a week to prevent shallow root growth-water junky grass etc. But it is hot as a mofo and grass seems to be patchy and fried in areas What should I do? Spotseed, some hay on it perhaps? And as I mentioned earlier what are those irrigation systems like that make that stuff on-do they come on every morning and do they aerate twice a year or something?