Another seller shows the filter placement in the opposite direction with the raised portions on top. Which is correct?

I found that when the smooth side is down it creates algae or mold, when the pockets are down it works much better. I guess either way would be ok since it filters the water either way, but because of the light in the bottom that is where it gets yucky

Do these come with the square sponge pre filters?

The filter you are talking about (I believe) does not come with square sponge pre-filter.

what side to the filters go on?

Puurrrfect Question: Your filter pad has two sides - one side is flat and the other has four elevated pouches. The side that has the four elevated pouches, will go into the filtering system downwards- meaning the flat part of the filter will be faceup - towards you!! Make sure you rinse real good and change monthly. Hope that helps!

Does this fit a LinGear cat fountain?

If your current filter is 5" round with a 1½" hole and about ⅜" thick, and pretty much looks like the picture. Then this filter will fit. I've been using them for several months and they appear to work fine. Neither of my cats have gotten ill or exhibit any heavy metal intoxication symptoms. They continue to prefer this fountain over the toilets.

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Comsmart Pet Fountain Filter Set, 3 Triple Filtration System Replacement Cat Water Fountain Filters for Round 81oz/2.4L Automatic Pet Fountain Cat Water Fountain (Pack of 8)

Comsmart Pet Fountain Filter Set, 3 Triple Filtration System Replacement Cat Water Fountain Filters for Round 81oz/2.4L Automatic Pet Fountain Cat Water Fountain (Pack of 8)

Product ID: 152761439

Details

External Testing Certification
NSF
Item Weight
4.66 ounces
Material
Activated
Product Dimensions
13.79"D x x

💧3-stage triple filtration

♻️8-pack long-lasting supply

🛡️Reduces heavy metals & impurities

€ 26.86

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Description

💦 Elevate your pet’s hydration game with triple-filtered freshness!

TAILORED FIT - Specifically engineered for 81oz/2.4L Comsmart fountains—perfect compatibility means zero hassle.
EASY MAINTENANCE - Quick rinse before use and simple replacement every 2-4 weeks keeps your pet’s water pristine without fuss.
TRIPLE ACTION PURITY - Cotton, activated carbon & ion exchange resin combine to deliver ultra-clean, fresh water your pet deserves.
BULK PACK CONVENIENCE - 8 individually sealed filters ensure you’re always stocked and ready—never run dry on freshness.
HEALTH FIRST HYDRATION - Boosts your pet’s water intake and lowers urinary tract infection risks with every sip.

The Comsmart Pet Fountain Filter Set offers a specialized triple filtration system combining cotton, activated carbon, and ion exchange resin to remove hair, heavy metals, and odors. Designed exclusively for 81oz/2.4L Comsmart pet fountains, this 8-pack ensures continuous access to clean, fresh water that promotes healthier hydration and reduces urinary tract infection risks. Easy to install and maintain, these filters are a must-have for pet owners prioritizing their furry friends’ well-being.

Specifications

ASIN	B07WGN4WYB
Best Sellers Rank	#29,353 in Pet Supplies ( See Top 100 in Pet Supplies ) #485 in Cat Fountains
Brand	Comsmart
Brand Name	Comsmart
Customer Reviews	4.6 out of 5 stars 7,181 Reviews
External Testing Certification	NSF
Item Dimensions D x W x H	13.79"D x 13.89"W x 8.59"H
Item Weight	4.66 ounces
Manufacturer	Comsmart
Manufacturer Part Number	A-583
Manufacturer Warranty Description	6 months
Material	Activated Carbon,Cotton,Plastic,Resin
Material Type	Activated Carbon,Cotton,Plastic,Resin
Model Number	8 Pack
Number of Items	8
Product Benefits	Provides clean, fresh water to increase water consumption and reduce risk of urinary tract infections Product Benefits Provides clean, fresh water to increase water consumption and reduce risk of urinary tract infections See more
Product Dimensions	13.79"D x 13.89"W x 8.59"H
Set Name	Pack of 8
UPC	716253452502
Unit Count	8 Count

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€ 26.86

Duties & taxes included

In stock

Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Italy.

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