The initial period of your pool ownership is the most critical. 60% of the curing or maturing process of a plaster finish occurs in the first 28 days and will continue over the next 8 to 10 months. This curing process causes the alkalinity, pH, and calcium levels to rise on their own as the pool strengthens and seals the new finish. If not kept in check this will cause scaling (roughness), pitting, and gray streaks/spots. A conscientious start-up and maintenance procedure must be followed to maintain the beauty and life of your plaster finish. Chemical Maintenance The curing plaster will drive the pH up rapidly within days. This will require your attention in balancing the chemicals to prevent scaling and hydration problems. With proper care it typically takes about 30 days for the pH and alkalinity to stabilize. The initial treatments will have been added by your Swim-Mor service technician at start-up. However, it is necessary for you to test and adjust your water chemistry a few times per week during the first few weeks. Beyond that, the water chemistry should be tested weekly.