So I want to keep my FC 5 or higher. I can only add chlorine in the evening right before sundown. If I take the chlorine up to 18 or 20 at 8pm then by 5pm the next evening it is right around 5 give or take 2ppm. So if there a better way to manage my chlorine if I can only add in the evening around 8pm? Am I doing right by taking it up to shock level every evening to make it till the next evening and not drop below 5ppm?.?