Your best bet is to measure it. Rachio doesn’t know if you have 3 heads for a zone or 30 heads for the exact same zone – and they don’t know your water pressure. Or if you have a mix of different ty[pes of heads on a zone (yes, it happens). So they take an average stab at things, but it’s best if you figure out your own unique situation. Here’s a good post for a methodology that should get you dialed in:
Also, this is a really good read (written by another user) to help you understand all the settings and their effect on things.
I know that Flex Monthly has often been recommended for people who want predictability in their watering schedules, but getting these settings close is equally as important for any of the Flex schedules. Taking time to work through them the first time can seem overwhelming, but once you get them it becomes pretty simple. Just do them one at a time and see what happens.
