Spa Filter Cartridge for Rainbow Dynamic 25 - Replaces PC-2375, Pleatco 17-2327

Overview

Keep your spa or above-ground pool sparkling with the Poolzilla Rainbow 25 replacement filter cartridge — a perfectly sized, hard-working filter that punches well above its compact frame. The pleated polyester media traps oils, lotions, leaves, and fine particles that cloud your water, while the accordion-style pleats create extra surface area so dirt has plenty of room to collect before you need to rinse. Measuring 13-5/16 inches tall with a 5-inch outer diameter and a 2-1/8 inch center hole, this cartridge is engineered to drop right into standard residential filter housings without shims, adapters, or guesswork. Sturdy molded end caps lock in place to prevent bypass — meaning dirty water can't sneak around the filter — so every drop that returns to your pool is genuinely clean. The result? Clearer water, less chemical usage, and more time enjoying your backyard instead of fussing with maintenance.

For best results, plan to rinse the Rainbow 25 every four to six weeks and replace it every three to six months — or anytime you notice your pump pressure climbing 8–10 PSI above normal, water clarity dropping even after shocking, or chemicals struggling to hold steady. A fresh cartridge does more than improve appearance: it reduces strain on your pump motor, helps your sanitizer work more efficiently, and keeps the water your family swims in genuinely safe and clean. Replacement is as easy as it gets — power off the pump, open the filter housing, lift out the old cartridge, drop in your new Poolzilla Rainbow 25, and you're done. Order today and keep a spare on the shelf so you're always ready for swim season, weekend guests, or that first warm day when nothing should stand between you and a perfect dip.

What's Included

Your order includes the selected quantity of replacement pool filter cartridges. Each unit is individually inspected for quality before shipping.