Geekpure 5-Stage RO Filter Set with 75 GPD Membrane — All Five Cartridges in One Box! $62.98 CAD (21% Off)

Amazon.ca has the Geekpure universal 5-piece RO replacement set with a 75 GPD membrane at $62.98 (list $79.99, 21% off). Prime members ship free; otherwise free over $35.

You get all five stages in one box — PP sediment, granular carbon, carbon block, 75 GPD membrane, and an inline post-carbon — plus two 1/4" quick-connect fittings and a roll of Teflon tape. Everything is standard 10-inch sizing (2.5" OD × 10" cartridges, 1.8" × 12" membrane), so it drops into iSpring, Watts, Premier, APEC, Crystal Quest and most other under-sink systems.

Most people only think about filters when the flow slows down or the kettle starts scaling. Sediment and carbon stages typically last 6–12 months and the membrane 2–3 years, and buying the set together beats ordering one cartridge at a time. It ranks #7 in Replacement Water Filters at 4.4 stars, and the advice that repeats in reviews is basic: use enough tape, don't overtighten the housings, and it won't leak.

Check that your housings take standard 10-inch cartridges first — all-in-one quick-change and odd-shaped filter systems won't work with this set.

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