Overview Keep your big pool sparkling all summer with the Poolzilla replacement filter cartridge for Hayward SwimClear C3030, C3025, C3020, C3000, and C3000S filter systems. Built to OEM specifications at 19-5/8 inches tall and 7 inches in outer diameter with a 3-inch center opening, this cartridge is engineered to drop right into your existing Hayward filter housing — no shimming, no adapters, no guesswork. The deeply pleated polyester media offers exceptional surface area, which means more dirt-trapping capacity, fewer cleanings, and water that stays crystal clear between rinses. Rigid molded end caps create a leak-proof seal so every drop of water passes through the filter (not around it), giving your pump an easier job and your family a cleaner swim. For best results, plan to rinse your cartridges every four to six weeks during swim season and replace them every 12 to 18 months — or sooner if your filter pressure climbs 8–10 PSI above its clean baseline, or if your water turns cloudy even with balanced chemistry. A fresh set of cartridges takes pressure off your pump motor, reduces chemical demand, and restores the powerful filtration your big pool needs to handle summer swim parties and heavy bather loads. Swapping them out is a simple job: power down the pump, release the air relief valve, open the filter housing, lift out the old cartridges, and set the new Poolzilla filters in their place. Order your replacement set today so your SwimClear system is fresh, efficient, and ready the moment swim season starts. What's Included Your order includes the selected quantity of replacement pool filter cartridges. Each unit is individually inspected for quality before shipping.
