Do not water your gunite until 24 hours has passed from initial application. It is recommended that you water your gunite at least twice daily. During the warmer months, three times minimum is best. You cannot put too much water on new gunite, so feel free to water away. It takes 30 days approximately for the gunite to cure, so you cannot hurt it by watering it for the full 30 days. The recommendation is that you at least do it for two weeks post application.