Wouldn’t the following scenario, which is how the Flex Daily algorithm works, be detrimental to a lawn, especially a cool season lawn?
Day 0: MAD for a zone is configured at 50% and the current soil moisture is above that value but not by much.
Midnight: The forecase for tomorrow (day 1) is 100F (38C) with enough rain to bring the soil moisture to the field capacity.
In such case, the Flex Daily algorithm won’t water because of the forecasted rain.
But something that is not considered by the algorithm is the forecasted time (hour) of the rain, what if the rain is forecasted to begin only by the end of day 1?
So even in a perfect scenario that the forecast was accurate and the rain will bring the soil moisture to the field capacity, it still means that during almost 24 hours the lawn was below the allowed depletion level and most likely even reached 0% soil moisture.
Wouldn’t it be an issue for a cool season lawn, especially if being repeated during the season?