That’s exactly my thought too, Bob.
I’m a coco user and it is highly recommended to alternate feeding and watering. During veg my schedule is feed water feed water. Around transition I go to a feed feed water cycle. All done with 10-20% runoff. This would reduce the need to flush, especially if you gave them a bit extra once a week. By extra I mean another quart.
I am also using @garrigan65 schedule throughout, of low tds value with GH products. Everything ph’d at 5.8 for feeding and I go to 5.5 for the water to take advantage of the tendency to rise in ph over time. They look great so far.