Approximately 12-18 pounds of diatomaceous earth (DE) is needed for a 60 square foot filter.
The amount of diatomaceous earth required for a 60 sq ft filter typically ranges from 12 to 18 pounds. This depends on the filter's design and the desired water clarity. Regularly adding DE maintains optimal filtration, removing fine particles. Always follow the filter manufacturer's instructions for proper loading.
Understanding DE Filter Sizing
- Filter Area: 60 square feet represents the total filter media area.
- DE Loading Rate: Generally, filters require 0.2 to 0.3 pounds of DE per square foot.
- Initial Charge: The first charge requires more DE than subsequent coatings.
Calculating DE Needs
To calculate the exact amount, multiply the filter area (60 sq ft) by the desired loading rate (0.2-0.3 lbs/sq ft). This yields a range of 12-18 pounds. Consider the type of DE - coarse or fine - as this can affect the amount needed.
DE Usage Comparison
| Method | DE Amount (approx.) | Frequency | Notes |
|---|---|---|---|
| Standard Coating | 12-18 lbs | As needed (pressure increase) | Maintains normal filtration. |
| Heavy Coating | 18-24 lbs | Initial startup or after backwashing | For quickly clearing cloudy water. |
| Light Maintenance | 6-9 lbs | Weekly | Prolongs filter cycles, reduces pressure build-up. |
Important Considerations
- Backwashing: Backwashing removes used DE. A new charge is required after each backwash.
- DE Grade: Use filter-grade DE specifically designed for pool or water filtration.
- Safety: Wear a dust mask when handling DE to avoid inhalation.