Hi, I just wanted to check in on this issue.
Recapping: After updating my sprinkler heads to low-flow MP-rotors, my irrigation times went up to very long times (8-9 hrs), which compromise the idea about “never irrigate at night”. Additionally, given the lower flow rate of the new MP-rotors, the pressure drop on the main water line is much lower and most implementations can probably support 2 or 3 simultaneous zones.
The proposed workaround, to reduce overall watering time, was to hard-wire two zones together. As I prepared to do this during mid-summer, I realized I just couldn’t get myself to do this because it negated the first principle of Rachio–water savings. Overall, my zones are all different (some have steeper slopes, others have more shade, etc.) and I had tuned each zone to water just right. I realized that by tying two zones together, I would inevitably have to overwater one of them, and that was not cool.
Now that there are upgrades happening to the app and service, I’d like to once again feature-request that you enable a software way to enable activating two zones simultaneously.