they say water once a week. I tried that and guess what.....the grass isnt as healthy looking. I had better results in watering when the soil is dry. I had topsoil in my yard waiting for seeding I did in september. I topsoil was there for the hot summer months and noticed exactly when it dries out. when it dries out deep. and when it gets really dry. and how long it stay moist and also how much is overwatering.
watering once a week deep....I had grass dry up.
if you have good loose soil from a liquid aerator shouldnt the roots just grow deeper.