One has to check the watercoming from the sprinkler to choose this. Generally, you should try things out from sprinkler by pouring in a containerthen taking note of duration. This would haveabout 30 minutes to get 1/2inch of water in a can, and onerequire1 inch of water over the yard. Hence, it states thatone has to water one hourin7 daysthat can be spread as 20 minutes three twice in seven days.