Sand, Cartridge, or DE: Which Pool Filter Fits You?

Pool filters come in three main types -- sand, cartridge, and diatomaceous earth (DE) -- and each one filters to a different level of fineness, needs a different kind of upkeep, and costs a different amount to run over time. Getting the match wrong usually shows up as cloudy water, more chemical use than expected, or maintenance that's more hands-on than you wanted.

This quiz walks through your budget, how much hands-on maintenance you're willing to do, how clear you want the water, and how you feel about backwashing and water waste, then matches you to the filter type that fits. Once you have your result, use the pool chemical calculator and pump size calculator to make sure the rest of your system supports it.