Plaster will be applied and the plasterers will start your hose going to fill the pool as soon as they are done. Do Not Turn Off the Water until your pool is full! Let the pool fill all of the way up until it reaches about an inch below the deck then turn the water off. This is slightly overfilled but you will be backwashing and it helps to have a little extra water in the pool until the plaster dust is filtered out. Follow the plaster care instructions given to you by WaterWorks of Texas. The plaster may appear a little mottled because the plaster does not dry evenly (yes it really does dry under water). Some parts stay wet longer and so appear darker, like a wet spot on a shirt. Brushing the pool and chemical balancing are extremely important on a plaster pool. Plan to spend a lot of time during that first week caring for your pool.