





Product description



Pawfly specializes in all must-haves of aquarium accessories such as air pumps, air stones, sponge filters, fish nets, cleaning brushes and other accessories to set up your aquariums.
Sponge Filter for 30 Gal Tanks
With 3-layer fine sponges, lots of gravels and ceramic rings to clear up impurities and promote air diffusion, it provides effective filtration and brings higher dissolved oxygen rate to keep water clean and healthy.
It features fine cleaning effect, quietness and easy maintenance. Ideal for aeration in 10 to 30 gallon fish tanks. Fit for shrimp, fry and various ornamental fish like betta, discus, guppy and goldfish.
Medium size: 3.1″ R x 3.3″ H Up to 30 gallon tanks Multi-layer fine sponge Natural gravels & ceramic rings Fit in the corner nicely Quiet & easy to be cleaned Make tanks crystal clear

Soft Fine Sponges
3-layersoft sponge material has high air/water permeability. The sponge sequence can be changed to meet your preference.

Gravels & Ceramic Rings
Effectively absorb harmful substances and cultivate beneficial microorganisms. They can be replaced with your customized materials.

Up to 30 Gallons
Medium size – 3.1 inches in radius and 3.3 inches in height. Work great in 10 to 30 gallon fish tanks or aquariums.

Corner Shape
Larger exposed surface area for more air exchange. Fit nicely in the corner to make way for fish’s swimming or tank decoration.

Air Powered
The air chamber produces tiny bubbles which greatly 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. Rinse and squeeze the sponges with aquarium water ONLY.
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Customer Reviews
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4.6 out of 5 stars 1,698
4.3 out of 5 stars 647
4.3 out of 5 stars 647
4.3 out of 5 stars 647
Price
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$6.49$6.49 $5.99$5.99 $7.98$7.98 $9.99$9.99
Size
1.5″ x 3″ 2.7″ x 6.3″ 3.3″ x 4.9″ 3.1″ x 3.3″ 3.1″ x 6″
Weight
1.1 oz 5.2 oz 3 oz 8 oz 14.6 oz
Quantity
1 Pack 1 Pack 1 Pack 1 Pack 1 Pack
Application
1-3 gallon small tank 10 – 30 gallon tanks 5-10 gallon small tank 10 – 30 gallon tanks 20 – 50 gallon tanks
Features
With hose & valve accessories Make tank crystal clear Fits in corner nicely Multi-layer fine sponge Natural gravels & ceramic rings
Package Dimensions : 4.92 x 3.39 x 3.31 inches; 8.15 ounces
Date First Available : March 24, 2023
Manufacturer : Pawfly
ASIN : B0BZH9PNCW
Best Sellers Rank: #7,931 in Pet Supplies (See Top 100 in Pet Supplies) #31 in Aquarium Filters
Customer Reviews: 4.3 4.3 out of 5 stars (647) 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); } }); });
Multi-layer Fine Sponge: Provide mechanical and biological filtration and trap debris or wastes without sucking up your fish. Keep fish tanks crystal clear and healthy.
Further Cleaning: The bottom gravels absorb excess damaging substances and release trace elements. And the ceramic rings can cultivate beneficial substances. Always keep water fresh.
For 30 Gal Tanks: Measure 3.1″ R x 3.3″ H. Fit for 10-30 gallon fish tanks. You can change the sponge sequence at will and customize the filter materials according to the breeding density of the fish.
Quiet Aeration: Air powered and cause no disturbance to your daily life. The outlet tubing is freely adjustable in height and the duck-billed outlet port brings more bubbles to promote oxygen circulation.
Easy to Clean: The filter can be easily detached for cleaning. Rinse the sponges every 2 to 4 weeks with aquarium water ONLY. Avoid soaking or washing them in tap water! Replace the white sponge every 2-3 months!
13 reviews for Pawfly Aquarium Corner Sponge Filter Quiet Betta Fry Shrimp and Small Fish Bio Foam Filter with Natural Stones Gravels and Ceramic Rings for Fish Tanks up to 30 Gallons (Air Pump Not Included)
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$7.98
Amazon Customer –
Way better than a sponge filter.
I have a betta that LOVES sitting against filter intakes and demolishing his fins, and this has been a life-saver.Great quality, quiet, and a good value for the price. I have it in running on a nano air pump and still have plenty of capacity to throttle the flow down for my betta.I don’t really think the double stack has much benefit vs the single. The uplift pipe does not extend into the lower compartment so you don’t get much flow through it. So just go with the smaller size. Swap the gravel out for your ceramic bio media. Put course sponge in the middle and top with a little filter floss and you’ll have no issues keeping your tank clean. It works perfectly in my 6 gal.Much cleaner than a sponge filter that splooges goop every time you take it out for maintenance.
TommyC –
Love how simple and effective this is
Ordered this because it fits in the corner and holds more filtration than a simple sponge filter. I really like being able to open it up to clean it but also to add/change filter types.
Chance Horetz –
Exceeded all expectations.
This actually has exceeded all my expectations and has worked way better than expected. I have not had to take it out to clean it. It keeps my tank clean and fits into the corner perfectly. What more could you ask for in a simple filter? I am definitely satisfied.And I would definitely recommend this two others and already have recommended it to others! Definitely worth it! And as far as filters go, it looks great in the corner, behind some plants! And it is extremely durable.
RUBEN –
Quiet, Effective Filter for Shrimp or Betta Tanks
This corner sponge filter is a great option for smaller tanks where you want gentle filtration without strong flow. I’m using it in a shrimp setup, and it works very well.The included bio-media (ceramic rings and stones) is a nice bonus and helps with biological filtration. It runs quietly once connected to an air pump.Pros:Excellent for fry, shrimp, and bettasGentle flow and very quietIncludes extra filter mediaSimple to install and cleanIf you’re running a planted or breeder tank, this is a dependable filter choice.
WB –
They work!
I have had some very expensive filters and still do. I didn’t expect much from this one. I got it as a back up for a shrimp tank. It was fantastic and I’m still shocked. It’s not often you get something that is ultra budget friendly and works, but this did. The one thing I would change is the media on the bottom layer. Get a little Biohome or Matrix and chuck the original. That media can’t hold enough beneficial bacteria. If this is a secondary supplemental filter no biggie. I also experimented and removed their sponges and put in poly floss. It worked just as good.
Mary B –
Replacement white filter layer is worthless
The filter worked fine in a 5 gallon fish aquarium. The white filter didn’t last very long. The replacement white filter is SO thin even two of them stacked together is thinner than the original white filter. VERY disappointed. The black filters are fine and similar to what came with the filter. No way would this filter handle a 30 gallon tank.
mark –
Awesome filters
Love the filters, and with these replacement pads, changing is easy.
Dremtime –
Works but easily clogged
Does a pretty good job in 10 gallon aquarium, but after 2 months stopped working. Cleaned and replaced white filter worked another 2 weeks and stopprd
Elijah M.D. –
I don’t have many negatives to say about this sponge filter. It works very well with my air pump and quickly cleared the dust from my cycling aquarium after first adding Fluval Stratum (stratum heavily mucks up the water at first, like the water was black). The sponge provides lots of surface area for beneficial bacteria to colonize, and my bladder snail babies seem to love grazing on and around it, I’m sure my future shrimp will too. The shape is pretty unique which is great for keeping in a corner. My only minor complaint and the reason for losing a star is that you need to do a DIY minor modification if you want to use an air stone inside, which I wish was built in from the start. If you don’t use an air stone you risk having your sponge filter sound like a witches brew or something rather than light bubbling.(The white bag on top of it in my photo is just a small media bag full of crushed oyster shells I’m using for raising KH)
Megan –
All 3 sizes use the same standard air tubing.I bought the big one for my 36 gal, 2 medium sized ones for my 20 gal, 1 medium sized for my 10 gal and I bought the tiny corner one for my 2.5 gal but I think it’s too big for the 2.5 gal. I think 5 gal would be perfect for the little one. Very easy to set up. I have a tiny pump for the med size one and a full sized, not huge pump for the big one. I also recommend getting the valves so you can set the air flow.
anne –
I’ve been using this filter for 2 months I had no issues with it so far so good. I will be ordering it again.
THRobinson –
Just got this, will update how well it works after a week. Will say it has some good weight to it, was expecting a hollow plastic base but it has weights inside. Planning the airstone mod, and my Nicrew mini air pump came with a 25mm stone, but you will need something under 20mm to fit. 20mm would be a tight squeeze. I’d aim for 18mm at most.Bought this for the corner of a 5.5gal tank, that had a nice hanging pump that came with it, but I have Celestial Danios, and I started to notice babies that are insanely small, so, switching to this.
Al –
It floats for awhile, make sure to squeeze all the air bubbles out of it and a couple rocks around the base keeps it in place. Works well and can see the filtration working within a few days. Note it doesn’t come with any attachments or pump.