Buy | Pool Filter

Your filter's flow rate (GPM) must be equal to or higher than your pump's output. For example, a 20,000-gallon pool with a pump turnover of 42 GPM requires a filter rated for at least 43 GPM. Capacity Chart:

Sand (~4.9 sq ft), Cartridge (400–500 sq ft), DE (60 sq ft). 3. Key Compatibility Checks buy pool filter

A filter that is too small will overwork your pump and lead to cloudy water. As a rule of thumb, to reduce maintenance frequency. Your filter's flow rate (GPM) must be equal

Sand (~3.0 sq ft), Cartridge (100–200 sq ft), DE (36 sq ft). Sand (~3

The three main types vary by their filtration precision (measured in microns) and maintenance needs. Filtration Level 20–40 microns Budget-friendly; low maintenance; lasts 5–8 years. Least precise; requires backwashing (wastes water). Cartridge 10–15 microns No backwashing; easier to install for above-ground pools. Cartridges need replacing every 1–2 years. D.E. (Diatomaceous Earth) 1–5 microns

Premium filtration; catches tiny particles for "sparkling" water.

For a rectangular pool, use: Length × Width × Average Depth × 7.5 = Total Gallons .