If you're weighing the sand vs cartridge pool filter decision, the headline answer is this: a sand filter only filters down to 20 microns while a cartridge filter filters down to 10 microns, roughly half the particle size. That single spec drives most of the differences you'll feel day to day, from how clear your […]

I have spent the last two swim seasons replacing cartridges in three different pools - a 15,000-gallon inground, an above-ground Intex, and a neighbor's older Hayward setup. After burning through six cartridges, two clogged pumps, and one very cloudy pool party, I learned that the best replacement pool filter cartridges are not always the most […]

I've spent the last 90 days testing, installing, and maintaining eight different DE pool filters in residential pools ranging from 15,000 to 35,000 gallons. After replacing grids, backwashing dozens of times, and staring at more pressure gauges than I'd like to admit, I can confidently tell you which diatomaceous earth pool filters actually deliver on […]