When we have a really good downpour like we did yesterday, excess water and other contaminants can be washed and blown into your pool. When you add more water to your pool you are possibly diluting the chemicals that are balanced in your pool. Also, the rain can bring foreign materials into your pool which can also affect your chemical balance. Come in for a free water test to make sure your pool is A-OK. We have all the chemicals that you would need to balance your pool!!