MyfatBOSS 12+12 Dog Fountain Filter Replacement Review

Intro — why replacement filters matter (and why I tried this pack)

I’m the kind of pet parent who obsesses over fresh water. When my dogs drink more because the water looks and smells better, I sleep better — plain and simple. After swapping between a handful of fountain filters, I picked up the MyfatBOSS 12+12 Pack (12 activated carbon filters + 12 sponge pre-filters) designed for the 3.4Gal/13L large dog water fountain and ran it through real house‑hold use.

This review is from hands‑on time with the replacements, informed by long‑term owner experience themes that line up with my testing. I’ll cover what the kit actually contains, how they perform day‑to‑day, how to install and care for them, possible safety notes, who they fit, and a practical verdict with a checklist to run through before you buy.

What it is — first look and specs

The MyfatBOSS 12+12 Pack is a replacement filter bundle made for a 3.4Gal/13L gravity‑fed automatic dog water bowl dispenser for large dogs. The pack contains 12 activated carbon filters and 12 sponge pre-filters (24 components total). The model number listed is MFB00271, the material type listed for filtration media is activated carbon, and the package dimensions are 8.7 x 5.31 x 1.5 inches with a package weight of 5.29 ounces.

Key product facts at a glance

• Compatible with: 3.4Gal / 13L automatic dog water bowl dispenser (large dog fountain)
• Included components: 12 activated carbon filters + 12 sponge filters (24 count)
• Filtration media called out: activated carbon, plus a multi-layer system that includes non‑woven fabric and ion exchange resin
• Model: MFB00271; Brand: MyfatBOSS
• Color (as listed): grey

In daily use — hands‑on testing and real house life

I treated the MyfatBOSS replacements like any fountain filter I’ve rotated through the kitchen: soak, rinse, install, and check during normal cleaning. The listing recommends soaking each activated carbon filter for 5 minutes and rinsing for 30 seconds before use to remove excess carbon dust, and that’s exactly what I did.

Installation and fit

• Installation was quick — the pack is built specifically to match the 3.4Gal/13L fountain, and the pieces sit where the stock filters do. In my experience they fit as the listing describes: a straightforward swap with no trimming or force required.
• Owners who use them for the compatible fountain report the same: the fit is correct for that model, and they’re easy to seat into the housing.

Filtration performance day‑to‑day

In everyday operation these filters do what they’re supposed to: the sponge pre-filter captures visible hair and debris while the activated carbon and ion exchange resin address odor, chlorine, and tiny impurities. After several days of normal use the sponges pick up hair and gunk and the activated carbon cartridges look noticeably discolored — an encouraging sign that they’re trapping contaminants.

One theme I saw in long‑term owner experience is consistent: these filters make the fountain water look and smell fresher, and dogs tend to drink more consistently when the fountain’s water stays clear. In my household the water smelled fresher and the sediment/hair buildup in the bowl was reduced compared with a no‑filter scenario.

Maintenance routine

• The listing recommends replacing the filter every 2 weeks, or more often in multi‑pet homes. I found that on a single‑dog household I could rinse sponges and reuse them a few times; still, calendar replacement every 2 weeks keeps things tidy.
• Owners report being able to rinse filters a few times before replacement. The listing instructions to soak and rinse first are important — the activated carbon can produce dust out of the box and rinsing improves early filtration.
• Swapping filters is fast; one person noted swaps take about a minute, and that aligns with my experience.

Materials & build quality

The filter system is described as a multi-layer setup that combines non‑woven fabric (the sponge pre-filter), ion exchange resin, and activated carbon. The listing emphasizes the combination: the non‑woven fabric catches hair and debris, the ion exchange resin softens water and helps reduce scale and heavy metal ions, and the activated carbon targets odors, chlorine, and tiny impurities.

How that translates to real use

• Non‑woven sponge pre‑filter: effective at trapping visible debris and hair — in my testing the sponges collected the majority of the floating hair and particulate before it ever reached the carbon cartridge.
• Activated carbon cartridge: after soaking and running, it visibly darkens as it captures odors and fine particulate. Rinsing after the recommended soak improves performance and reduces early dusting.
• Ion exchange resin: listed as part of the system to help with scale and metal ions. That component is part of the cartridge makeup; you’ll notice the filter seems to slow scale formation in the bowl over time compared with an unfiltered fountain.

Quality impressions

Owners and my hands‑on use converge: these aren’t laboratory‑grade cartridges but they feel well‑assembled and robust for the price. Multiple long‑term users said the filters “hold up well” and don’t fall apart quickly, and I saw the same: after several rinses and weeks of service the sponge maintained structure and the carbon cartridge stayed intact.

Safety considerations

Safety first: filters and sponges are consumable parts, not chew toys. The listing does not explicitly describe chew resistance or choking hazards, so I recommend treating spare filters and used sponges as small objects to keep out of reach of dogs who mouth or chew things.

• Follow the listing’s prep steps: soak each activated carbon cartridge for 5 minutes and rinse 30 seconds before use. This removes excess carbon dust that could cloud the first hours of filtration.
• If your dog is a powerful chewer or mouther, store spare filters where the dog can’t access them. The manufacturer’s copy does not state chew resistance, and owners’ notes do not report chew incidents, but it’s prudent to keep filters stowed.
• As with any fountain part, check seals and seating after installation so the fountain remains stable and doesn’t leak. The listing frames the fountain as gravity‑fed — correct seating prevents unexpected spills.
• For water quality issues or pet health concerns (especially if your pet has a known sensitivity to minerals or metals), consult a qualified professional. The listing notes ion exchange resin helps reduce scale and heavy metal ions but does not provide clinical or claims.

Who this is for — and who should skip it

Filters are fit/product specific. This pack is geared at people who own the compatible 3.4Gal/13L large dog fountain model and want an economical replacement supply.

Best for

• Owners of the 3.4Gal/13L MyfatBOSS‑compatible large dog fountain who need a multi‑month supply of replacement media.
• Households that want a combo pack (activated carbon + sponge pre‑filter) for regular maintenance.
• People who value easy swaps and don’t want to pay a premium for brand‑name cartridges — the listing and owner experience highlight value and compatibility.

Who should skip or reconsider

• If you don’t own a 3.4Gal/13L compatible fountain, don’t assume these will fit other maker’s designs — the listing specifically calls out compatibility with that size and style of dispenser.
• If your dog chews household items, consider keeping the filters out of reach. The listing doesn’t address chew resistance and owners don’t report chew‑through protection.
• If you require specific certified filtration claims (e.g., laboratory test data, AAFCO/ endorsements) those aren’t provided in the listing — consider contacting the manufacturer for more technical details.

Durability & longevity — what to expect over time

The listing recommends replacing filters every 2 weeks and suggests more frequent changes for multi‑pet homes. Owner experience backs that up: some people replace weekly in heavy use, while others rinse sponges and reuse them a few times before replacement.

• Typical rhythm: soak & rinse on first use, then replace per the two‑week guideline; household traffic and the number of pets will push you to a shorter or longer schedule.
• Owners report that the filters can be rinsed and used several times, and that they don’t fall apart quickly — a sign of decent build life for a consumable.
• Because these are consumables, expect steady replacement — the pack gives you multiple swaps to cover months of maintenance depending on how aggressively you change them.

Value & overall impressions

The overriding theme across product copy and owner experience is value: the combined 12+12 format gives replacement activated carbon and pre‑filters in one bundle so you can keep the fountain cycling clean water without separate purchases. In my use the fountain stayed clearer and my dogs drank more regularly when filters were installed and kept fresh.

Fit, ease of swap, and the soak‑and‑rinse instructions make them beginner‑friendly. Owners report that filters look “nasty” when removed, which I take as evidence they’re catching the right stuff — hair, dust, and scale. If you want a no‑fuss replacements pack for the correct fountain model, these are a solid, practical pick.

Verdict — my final take

For households that already own the compatible 3.4Gal/13L gravity‑fed dog fountain and want an economical, effective replacement supply, the MyfatBOSS 12+12 Pack delivers. The multi‑layer filtration system (non‑woven sponge + ion exchange resin + activated carbon) matches what the listing promises and aligns with long‑term owner experience: cleaner looking water, reduced odors, and straightforward swaps.

Strengths

• Designed to fit the 3.4Gal/13L large dog fountain for a seamless swap.
• Combo of sponge pre‑filter and activated carbon cartridge tackles hair, debris, odor, chlorine, and tiny impurities.
• Owners report good real‑world performance: reusable sponges for a few rinses and clear water that encourages drinking.
• Easy to prepare and install — the listing’s soak & rinse step is clear and practical.

Weaknesses / caveats

• These are consumables — expect ongoing replacement on roughly a two‑week cadence in normal use, more in high‑traffic homes.
• The listing doesn’t discuss chew resistance or provide third‑party certifications; store spares well out of pet reach and contact the maker for technical data if you need it.
• Compatibility is specific — these are for the listed 3.4Gal/13L fountain model, so double‑check your fountain model before ordering.

Check before you buy — quick checklist

• Confirm your fountain is the 3.4Gal/13L automatic dog water bowl dispenser the pack is designed for.
• Plan a maintenance rhythm: listing recommends replacing filters every two weeks; busy multi‑pet homes may need weekly changes.
• Soak each activated carbon filter for 5 minutes and rinse for 30 seconds before first use to remove excess carbon dust.
• Store spare filters where pets can’t reach them, especially if you have dogs that chew or mouth household objects.
• Keep sponges and cartridges on hand so you can swap during your regular fountain cleanings.

Final thoughts

If you run the compatible large dog fountain and want a practical, value‑oriented replacement option that includes both sponge pre‑filters and activated carbon cartridges, this MyfatBOSS 12+12 pack covers those bases. It’s not a miracle filter that replaces professional water testing or professional health advice, but in daily household use it keeps fountain water clearer and fresher, and it’s straightforward to install and maintain.

For most pet parents with the correct fountain model, these filters strike a good balance of performance and value.

Colors and packaging

• listed color: grey