General | Filter balls | Sand | 25 mic |
Maintenance/back | Backwash rarely | backwash often | Exchange often |
Wash | Light | Heavy | Light |
Weight | Low | Low | Low |
Pump Power | 3-5 years | 2-4 years | 4 weeks |
Durability | High | High | High |
Flow Rate | Low | Low | Low |
Pressure reduction | Yes | Yes | Yes |