When selecting a sand filter for your above-ground pool, there are several key factors to consider to ensure optimal performance.

1. Filter Size and Capacity
Pool Volume: Choose a sand filter that can handle the volume of your pool. The filter’s flow rate (measured in gallons per minute, GPM) should match your pool’s pump capacity.
Turnover Rate: Your filter should be able to process the entire pool volume in 8-10 hours. This ensures the water is cleaned efficiently.
Formula: Pool Volume (gallons) ÷ Turnover Time (hours) ÷ 60 = Required Flow Rate (GPM)

2. Filtration Efficiency
Micron Rating: Check the filter’s micron rating, which indicates the size of particles it can remove. Lower micron ratings mean finer filtration.
For example Aqualoon filter has a micron rating of 3 microns.

3. Durability and Construction

Material: Look for filters made from durable materials like high-density polyethylene (HDPE) which resist UV damage and corrosion.

4. Ease of Maintenance

Backwashing: Ensure the filter has an easy-to-use backwash function to clean.