Moisture Levels Confusing

Here are a couple of links from the Seasonal adjustment thread that describe the methodology used in Flex from resources other than Rachio.

https://www.rainbird.com/landscape/resources/webinars/ManagementAllowedDepletion-IrrigationScheduling.pdf4

http://extension.colostate.edu/topic-areas/agriculture/irrigation-scheduling-the-water-balance-approach-4-707/

Flex is not for everyone. You may end up not running it.