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Pawfly specializes in all must-haves of aquarium accessories such as air pumps, water pumps, air stone, sponge filters and fish nets to set up your aquariums.
Sponge Filter for Large Tanks
The sponge filter provides effective filtration and increases the oxygen level to ensure a clean tank environment. It features fine cleaning effect, quietness and easy maintenance. Fit for shrimp, fry and various ornamental fish like betta, guppy, and goldfish.
Large size of 3.3″ D x 8.2″ H Up to 50 gallon tank Easy to be cleaned Work quietly Make tank crystal clear

Up to 50 Gallons
Measure 3.3 inches in diameter and 8.2 inches in height. Work great with 20 – 50 gallon tanks.

Keep Water Clear
An ideal way to clear up debris to keep a crystal clear water tank.

Soft Fine Sponge
Premium sponge material traps floating debris without sucking up your fry or shrimp.

Air Powered
The air chamber produces tiny bubbles which increase the oxygen solubility of water. Air Pump Not Included.

Easy to Clean
Detachable design allows you to easily take it apart for cleaning or replacement.

Clean with Tank Water
Rinse and squeeze the sponge with aquarium water ONLY.
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Customer Reviews
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4.3 out of 5 stars 647
4.5 out of 5 stars 260
4.6 out of 5 stars 1,698
4.6 out of 5 stars 1,698
4.5 out of 5 stars 1,880
Price
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$5.99$5.99
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$6.99$6.99 $5.99$5.99 $8.99$8.99
Size
1.5″ x 3″ 3.3″ x 4.9″ 4.6″ x 8″ 3.3″ x 8.2″ 2″ x 6.2″ 4.6″ x 8″
Weight
1.1 oz 3 oz 8.72 oz 7.7 oz 2.9 oz 8.72 oz
Quantity
1 Pack 1 Pack 1 Pack 1 Pack 1 Pack 1 Pack
Application
1-3 gallon small tank 5-10 gallon small tank 30-60 gallon big tank 20-50 gallon big tank 10 – 20 gallon small fish tanks 30-60 gallon big tank
Features
With hose & valve accessories Fits in corner nicely Service for bigger aquarium tank Easy to clean or replace Easy to be cleaned With complete accessories set
Package Dimensions : 6.14 x 4.02 x 3.98 inches; 9.17 ounces
Date First Available : September 18, 2021
Manufacturer : Pawfly
ASIN : B09GLR2CMP
Best Sellers Rank: #15,796 in Pet Supplies (See Top 100 in Pet Supplies) #137 in Aquarium Filter Accessories
Customer Reviews: 4.6 4.6 out of 5 stars (1,698) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Fine Sponge Filtration: It provides mechanical and biological filtration and traps debris or waste without sucking up your fish, keeping a crystal clear water tank.
Large Size: It measures 3.3″ D x 8.2″ H. Fit for tanks up to 50 gallons. Suitable for the breeding and feeding of various ornamental fish, shrimp or fry.
Easy to Clean: The filter can be easily detached for cleaning the dirt. Rinse it every 2 -4 weeks with aquarium water ONLY. Avoid washing it in tap water!
Quiet Aeration: Air powered and causing no disturbance to your daily life. Do squeeze the sponge in the water to remove all trapped air and make the filter sink to the bottom.
Air Pump Not Included: You need an extra air pump to run the filter, which processes external air to promote oxygen circulation, providing a healthier tank environment.
13 reviews for Pawfly Large Aquarium Bio Sponge Filter Quiet Betta Fry Shrimp and Small Fish Foam Filter for Fish Tank up to 50 Gallon
Add a review
$6.99
Erin –
Fit depends on tank lid
It works really well for my tank, which is 20gallons. It’s only been in for one day and the tank is very clear. It fits okay, really depends on what type of lid you have. The noise isn’t too bad, just have to adjust it to your liking. So far it seems fairly durable and not to hard to clean.
Anne Dalton –
Works well, can be modified to fit in airstone
It doesn’t make much noise once you fit in an air stone which wasn’t /easy/ to do but totally doable. The suction and capability of this filter all depends on your air pump. It’s a good value, I had all the tubing and necessities already and definitely didn’t need more when I just wanted the bare bones sponge filter and this delivered. The bottom is weighted enough it doesn’t float. Appearance wise, it’s taller than it is wider so for flashier fish tanks you’ll have to have taller decor to hide it behind. Great filter overall. I use sand in this tank and the fine mesh was nice to clear up cloudiness
Dimitri Savinelli –
Works great
Works great
G.T. –
Good sponge filter
Bought this for extra filtration in my 30g tank. It’s done its job and seems to be made of good quality. I would recommend.
Kindle Customer –
Does it’s job very well.
It’s so cute and skinny thay I can easily hide it behind some of my longer plants and it does it’s job so well. My tank is still so clean after even the whole month. When I had to do my water change for the month, it was still so clean! Great performance and such an easy install. Not too much noise either but that’s mostly on the pump.
Ainun Sofiati –
Works well
Works perfectly with 15-20 gallon tank. We have multiple guppies and pattys, the tank always look clean. I barely notice any noise. Easy to use, just make sure it’s completely submerged.
Wes –
Great price compared to name brand products.
Similarly sized sponges are nearly twice as much from other companies. This sponge is particularly dense though. It took a bit of effort to continually wring it out underwater to get it fully saturated and remain on the bottom of the tank.Note that manufacturers will generally overrate the filtration capacity of all filters. Unless you’re using this as a secondary filter, you should probably go one size above the listed capacity.The other thing that I would recommend is to use an air pump that has an adjustable air flow pressure. A standard air pump that’s not adjustable could push air through too quickly or not enough. The air pump that I was using caused a very fast flow of bubbles hitting the surface and a lot of splashing. I had to put a splitter on my pump to reduce the air presure.
Savage1 –
Works great!
Buy them!
Veronica Alpesse –
I started a nano tank (7 l). It’s been cycling for a week and the water stays really clean. I added some fish food to build beneficial bacterias, i planted it a bit using only non washed technical soil and had no murky water at all. Let’s hope it will keep on the good way once more plants and the shrimps will be in.Finger crossed
Aurora Somma –
Il filtro in spugna Pawfly è una soluzione semplice ed efficace per mantenere pulito un piccolo acquario fino a 40 litri. Il suo funzionamento è estremamente silenzioso, caratteristica che lo rende ideale per vasche collocate in camere o uffici. La spugna a porosità fine offre un’ottima filtrazione biologica, creando un ambiente sicuro e stabile per gamberetti e piccoli pesci, senza rischio che vengano risucchiati.L’installazione è immediata e la manutenzione molto comoda: basta risciacquare la spugna per ripristinarne l’efficienza. Nonostante le dimensioni compatte, garantisce un buon ricircolo dell’acqua e contribuisce a mantenere una qualità costante nel tempo. Le numerose recensioni positive confermano la sua affidabilità.In sintesi, il filtro Pawfly è una scelta pratica, silenziosa e perfetta per chi cerca un sistema di filtrazione biologica efficace nei nano acquari.
Shane Z –
I use this filter in one of my 10 gallon Betta Fish tank and it works really well!
J.M –
Pratique retient les petites particules flottantes, mais il faut acheter le bulleur avec, sinon il ne sert à rien.
diane forsythe –
Great sponge filter – works well just as it’s supposed to for small nano tanks, I currently am actively using it in a 5 gallon tank! Please don’t forget that it does not come with an air pump ! But anyways – the noise level can be adjusted with the air pump / air valve, or whatever the name of that little accessory is called. It’s extremely easy to clean as well as a great value for money! I highly recommend this filter to anyone who has an air pump or is willing to buy one.