It is important to test your pool water regularly for both clarity and pH level. Depending on how often the pool is used, you may need to test it weekly or even daily. A good rule of thumb is to test the water at least once a week, but more often if it is being used frequently.
To test for clarity, you will need a turbidity kit. This measures the amount of particles in the water and gives it a numerical reading. The ideal range for turbidity is 0-5 NTU (Nephelometric Turbidity Units). If your reading is above 5, then the water is too cloudy and you will need to take steps to clear it up.
To test for pH level, you will need a pH testing kit. This measures how acidic or alkaline the water is on a scale of 0-14. The ideal range for pH levels in a pool is 7.2-7.6. If your reading falls outside of this range, then you will need to adjust the pH level accordingly using chemicals such as muriatic acid or soda ash.