Bought one of the $10 stick in the ground moisture meters from Amazon. It’s the style that has two probes and a little switch for moisture light pH. I wasn’t hoping for too much but it has given me some objective info as I’ve been tweaking my Flex daily schedule.
I’ve been checking all my zones everyday with the moisture meter, through hot and sunny and also some rain. I get confidence in my Flex daily setup for a Zone when the moisture meter says moisture is at the low end of the green ok range and flex daily is planning on watering that night.
And the moisture meter has helped me learn that when I have several rainy days in a row I may need to fill the zones for a day or two to allow all the extra moisture to evaporate or get absorbed and then let Flex daily start get back to using it’s algorithms in a accurate manner.