Buy Pool Filter Apr 2026

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:

Buying the right pool filter is the most important decision for keeping your water clear, as it handles in maintaining water quality. Use this guide to navigate types, sizing, and key compatibility factors. 1. Choose Your Filter Type buy pool filter

Most expensive; requires adding DE powder after backwashing. 2. Determine the Correct Size Your filter's flow rate (GPM) must be equal

Sand (~4.9 sq ft), Cartridge (400–500 sq ft), DE (60 sq ft). 3. Key Compatibility Checks Use this guide to navigate types, sizing, and

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

Pool Filter Sizing - How to Choose the Right Size - Leslie's Pool Supplies