Make sure it does not happen when another schedule is running, So during the day you will need three schedules. One for the AM time then the one for nutrient export and the afternoon schedule. So that would make 4 total.
Schedules cannot overlap.
You can do that by switching modes and have only the one you want to run active in that mode but inactive in the other modes and any overlapping schedule have them set the opposite, The other way is using the depends on in the schedule and setting the dependency mode to off if off or off if on depending on if you want the schedule to run if the output is on or not. Then use the opposite dependency mode on any other schedule that may be on at that time. You can set a schedule for feed mode and have it active only in feed mode but the other schedules inactive. In that case for the feed mode schedule you would want the time set from 00:00:00 to 00:00:00 so it would run any time the feed mode button were pressed. Also you can do the same for low power mode if you have battery back up.
