Sand (~3.0 sq ft), Cartridge (100–200 sq ft), DE (36 sq ft).
For a rectangular pool, use: Length × Width × Average Depth × 7.5 = Total Gallons . buy pool filter
Pool Filter Sizing - How to Choose the Right Size - Leslie's Pool Supplies Sand (~3
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 Use this guide to navigate types, sizing, and
A filter that is too small will overwork your pump and lead to cloudy water. As a rule of thumb, to reduce maintenance frequency.
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
Most expensive; requires adding DE powder after backwashing. 2. Determine the Correct Size