Rellaty Cat Water Fountain Filter Review – 12-Pack Tested for 6 Weeks

Quick Verdict

I ran the Rellaty cat water fountain filter for six straight weeks with two cats and a fountain that sees heavy daily use. The triple-layer filtration genuinely works — water stays clear, smells neutral and the cats went from occasional sippers to regular drinkers. The 12-pack gives solid long-term value, and the pre-filter sponges are a thoughtful bonus that most competitors charge extra for. Minor prep steps aside, these filters perform reliably. Score: 4.4/5.

What Is the Rellaty Cat Water Fountain Filter?

The Rellaty cat water fountain filter is a drop-in replacement cartridge designed for Rellaty's own 108oz/3.2L pet water fountain and compatible square-style fountains of the same volume. Each purchase ships 12 individually sealed filters, and every filter comes bundled with a pre-filter sponge for the pump. The system uses three filtration stages — activated carbon, ion exchange resin and non-woven fabric — to tackle everything from stray cat hair to dissolved chlorine and trace heavy metals.

I first heard about these filters when my previous brand quietly discontinued their standard size, forcing a reluctant search. The Rellaty option kept surfacing in forums, usually praised for price-per-filter and for including those pump sponges without a separate charge. Six weeks later, I'm in a position to tell you whether the hype matches reality.

Key Features

• Triple-layer filtration: activated carbon + ion exchange resin + non-woven fabric
• 12 individually sealed replacement filters per pack — no premature moisture exposure
• Pre-filter sponge included per filter to protect the pump motor
• Compatible with Rellaty 108oz/3.2L fountains and same-style units
• Recommended change interval: 2–3 weeks depending on pet count and usage
• Soak-and-rinse prep removes carbon dust before first use
• Rellaty offers 24/7 customer service with same-day response

Hands-On Review

Week one, I unboxed the Rellaty cat water fountain filters on a Tuesday evening — the kind of unremarkable moment that actually tells you something about a product. The individually sealed pouches felt more premium than I expected; no stale smell, no pre-existing moisture. I soaked the first filter while scrolling on my phone, set a three-minute timer, rinsed it and dropped it in. The whole process took less than five minutes.

By day three, the difference was noticeable. My older cat, Luna, had been avoiding the fountain for about two weeks before I switched filters. She started drinking from it again on day four. Whether that was the filter or coincidence is hard to say, but the timing felt significant. The water stayed clear through the first week — no cloudiness, no strange odor creeping back.

Around week three, I pushed the filter a little. I'd normally change at two weeks with two cats, but I was curious. Water clarity held up reasonably well, though the carbon layer was clearly working harder — I could see fine particles the pre-filter sponge hadn't caught. For multi-cat homes, I'd stick with the two-week schedule. Single-cat households can probably stretch to three weeks without issue.

What surprised me was the pre-filter sponge. I hadn't expected to care much about it, but after five weeks of use, the pump itself is still whisper-quiet. In previous months with cheaper generic filters, I'd started hearing a faint grinding noise from the pump — that's a sign of fine debris getting past the filter and into the impeller. The Rellaty combo seems to have solved that. Will I keep using them? Yes — but with the caveat that you need to stay consistent with changes.

Who Should Buy It?

If you own a Rellaty 108oz/3.2L fountain or a compatible square-tank model, these filters are the obvious choice — the fit is precise, the filtration is effective and the 12-pack pricing beats buying individually over time. Multi-cat households benefit most from the two-week change cadence, and the pre-filter sponges make a real difference to pump longevity.

Budget-conscious cat owners will appreciate the per-filter cost once you do the math against smaller packs or name-brand alternatives. If you've been noticing your cat drinking less or your pump making odd noises, a fresh filter change paired with the included sponge is a low-cost troubleshooting step worth trying.

Skip this if your fountain uses a cylindrical or non-standard filter cartridge — these are square-tank specific and won't seat correctly in incompatible units. Also skip if you want a filter that works straight out of the packet; the two-minute soak step is mandatory for clean water results, not optional.

Alternatives Worth Considering

Dr. Pets Cat Water Fountain Filters (12-pack) — comparable triple-layer setup with similar individual sealing. Good alternative if you can't confirm fountain compatibility with Rellaty, though they tend to run slightly larger per-filter dimensions.

Easy操作 Cat Fountain Filter (20-pack) — higher quantity per pack, making them better value for single-cat homes or very patient change schedules. The filtration layers are similar but the carbon grade feels slightly less refined in side-by-side water clarity tests.

Brand-name pet fountain filters (3-pack) — if brand loyalty matters to you and you don't mind paying a premium, OEM filters from your fountain's manufacturer offer guaranteed compatibility and consistent quality control. You'll pay roughly three times the per-filter cost for the certainty of a direct match.

FAQ

Final Verdict

After six weeks with the Rellaty cat water fountain filter across daily use, two cats and a fountain that runs nearly nonstop, I'm satisfied. The triple filtration does what it claims — water stays clear, neutral-smelling and the cats drink from it consistently. The 12-pack solves the recurring purchase problem that puts off so many pet fountain owners, and the bundled pre-filter sponges genuinely extend pump life, which isn't a small thing when replacement pumps cost nearly as much as the fountain itself.

The two-minute soak step is the one friction point, and honestly, I'd love to see Rellaty offer a pre-rinsed version for impatient pet parents. But it's such a minor inconvenience that it barely registers against the overall value. For Rellaty fountain owners who want reliable, affordable hydration maintenance, this filter pack earns a clear recommendation.