How much of a 3 in chlorine tablet do i put 700 gallon pool?

For a 700-gallon pool, you should add approximately 1 to 3 tablets of 3-inch chlorine tablets per week.

Keep in mind that the specific amount of chlorine required can vary depending on several factors such as sunlight exposure, temperature, and usage of the pool. Regularly test the pool water and adjust the chlorine level as needed to maintain a proper sanitization level of 1-3 ppm (parts per million).

Additionally, it's essential to monitor the pH level of the pool water and keep it within the ideal range of 7.2 - 7.8 for optimal effectiveness of the chlorine.