I've just noticed a strange aberation......
We are experiencing "rolling blackouts" here, and power goes out for 2 hours at a time once or twice a day - depending on your schedule.
I have a timer set up in Reef-Pi that adds Kalkwasser every hour (and my ATO does the rest). The timer is set to run on every "01" minute. Our rolling blackouts seem to start and stop pretty near exactly on the hour. I've noticed a couple of times that when the Reef-Pi starts up, the timer seems to be running, but does not turn off as it is supposed to. I can go in manually and turn the equipment off.
As a work-around, I have now set the timer to run on the "30" minute.
But it would seem that if the Reef-Pi loses power during a timed operation, it does not remember to reset the equipment status to orignal when power is restored.
I am also going to install a small UPS for my Reef-Pi to keep the Pi alive for a few hours in the event of a power outage. Not the equipment, just the Pi. Should also help with this issue.