If your filter is a Hayward Manufacturing Company Regenerative Unit, follow the manufacturer's instructions for filter aid usage, Otherwise:
- Step One: Find the capacity (area) of your filter equipment. (This figure usually appears on the outside of the filter housing, listed in square feet.)
- Step Two: Use the chart above to determine the proper amount of D.E. to use.
- Step Three: To extend filter cycles for pools up to 20,000 gallon capacity, add one full cup of D.E. to the filter inlet each morning and afternoon. For larger pools, discuss with your D.E. dealer.
Important: Initially, you may experience shorter cycles as you clean unfiltered water or after a heavy pool usage. Generally, this indicates the filter aid is working efficiently. Clean the filter as required and enjoy clean, clear swimming pool water.
| Square Feet of Filter Area |
Pounds of D.E. |
| 5 |
3/4 |
| 10 |
1 /12 |
| 15 |
2 1/4 |
| 20 |
3 |
| 30 |
4 1/2 |
| 40 |
6 |
| 50 |
7 1/2 |
| 60 |
9 |
| 80 |
12 |
