what I want is that:
when Stream_1 runs at 35%, Stream_2 runs at 90% at daytime,
when Stream_1 runs at 90%, Stream_2 runs at 35% at daytime;
when Stream_1 runs at 35%, Stream_2 runs at 70% at nighttime,
when Stream_1 runs at 70%, Stream_2 runs at 35% at nighttime;
when Stream_1 stops, Stream_2 runs at 40% at Feedtime,
when Stream_2 stops, Stream_1 runs at 40% at Feedtime,
and then both pumps stop for 5 seconds at Feedtime.