A little history… I bought the Rachio in April and went with the flex monthly schedule, using all the recommended settings for my soil time and amount of sun. Was amazed at how much water it was saving me, and then I noticed my lawn started to die. Since then, I’ve been trying to figure out how Rachio comes up with numbers seemingly out of no where.
I’m in central Florida with St Augustine grass. It regularly is very hot and humid. I’m allowed to water 2 days a week. General rule for this type of environment is 1 - 1.5" of water per week. Prior to Rachio, I watered twice a week, 30-40 minutes per zone.
- On Flex monthly, water time was 30-40 minutes per zone, depending on the amount of sun (sunny areas got more water). But it only watered once a week.
- On flex daily, water time was 10-20 minutes per zone, twice a week. Strangely, the areas with lots of shade was watering more than the areas with lots of sun.
- On fixed schedule, recommended water time was 30-40 minutes per zone, twice a week.
How does this make any sense? How could the 3 types of schedules come up with vastly differing amounts of water? I didn’t override any of the recommended water times.
Having read through this forum a bit, I realize now that flex daily doesn’t work well if you can only water 2 days a week, but how was I supposed to know that if I didn’t pore through user posts? Why didn’t the app tell me this? And it still doesn’t explain the backwards watering on flex daily, or the flex monthly being half of fixed.
I’m going to leave it on fixed for now, but I really don’t understand this thing. It was supposed to be smarter than me when knowing when and how much to water my lawn, but it really seems like it’s just doing random things.