Pool Filter Ball Calculator: How Many Do You Need?
Calculate the number of pool filter balls needed by dividing your filter's volume (in liters) by 700. For example, a 700-liter filter requires 1 bag (700 balls), while a 2100-liter filter needs 3 bags (2100 balls).
Understanding Pool Filter Ball Requirements
Pool filter balls replace traditional sand media in filtration systems. Each bag contains approximately 700 balls and replaces 25kg of sand. The calculation is straightforward: your filter's capacity in liters divided by 700 gives you the number of balls needed.
Quick Reference Calculation Table
| Filter Volume (liters) | Filter Balls Needed | Bags Required |
|---|---|---|
| 700 | 700 | 1 |
| 1400 | 1400 | 2 |
| 2100 | 2100 | 3 |
Benefits of Using Filter Balls
- Lighter weight than sand (700g per bag vs 25kg for sand)
- Better filtration efficiency (10-15 microns vs 20 microns for sand)
- Easier handling and replacement
- Reusable and washable
Installation Tips
Fill your filter to about 70% capacity with filter balls, leaving space for water flow. Remove approximately 30% of existing media if replacing sand. Always check your filter manufacturer's specifications before converting to filter balls.