Maintaining the correct chlorine level in a 10,000-gallon pool is essential for ensuring clean and safe water. The number of chlorine tablets you'll need depends on several factors, including the size of the tablets and the current condition of your pool water. Here's how to calculate it:

1. Understand Chlorine Tablet Size: Chlorine tablets typically come in either 1-inch or 3-inch sizes. The 3-inch tablets are more common for larger pools like a 10,000-gallon pool.

2. Determine the Chlorine Demand: A 10,000-gallon pool generally requires 2 to 3 ppm (parts per million) of chlorine for proper sanitation.

3. Calculate Tablet Quantity: One 3-inch chlorine tablet usually treats about 5,000 gallons of water and provides 5 ppm of chlorine. Therefore, for a 10,000-gallon pool, you would need approximately one to two 3-inch tablets per week to maintain the recommended chlorine levels.

4. Consider Other Factors: The actual number may vary depending on factors such as pool usage, weather conditions, and the pool's exposure to sunlight. Pools under heavy use or located in sunny areas may require more frequent addition of chlorine.

5. Regular Testing: Always test your pool's chlorine levels regularly using a pool test kit. This will help you adjust the number of tablets as needed.

6. Use a Chlorine Floater: Place the chlorine tablets in a floating chlorine dispenser to ensure an even distribution of chlorine throughout the pool.

By following these guidelines, you can calculate the appropriate number of chlorine tablets needed to keep your 10,000-gallon pool clean and safe.