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The Best 20 Gallon Sponge Filter of 2023 – Reviewed and Top Rated

2,338 (random number) Reviews Scanned

Rank No. #1

AQUANEAT Aquarium Bio Sponge Filter Breeding Fry Betta Shrimp Nano Fish Tank (Middle up to 20Gal)

Sponge filter provide both mechanical and bio filtration, also, the air infusion chamber produces minute bubbles which increase the oxygen solubility
Safe for fish: soft sponge material, traps floating debris and won't suck up your fish
Easy to set up & clean: simply install an airline into the unit and turn on the air pump, simply rinse and squeeze sponge in tank water
Recommend tank size: up to 20 gallon, excellent for small size fish like betta, dwarf cichlid, guppy, killifish etc., or for hatcheries, maternity tanks, nano tanks and fry tanks, as the filter produces minimal current and has almost no way to suck the fish through the filter
Includes: 1 PC of sponge filter; Dimension: 3.0"D X 6.5"H

Rank No. #2

Pawfly Aquarium Bio Sponge Filter Quiet Betta Fry Shrimp and Small Fish Foam Filter for Fish Tanks up to 20 Gallons

Fine Sponge Filtration: It provides mechanical and biological filtration and traps debris or wastes without sucking up your fish, keeping a crystal clear water tank.
Small Size: It measures 2" D x 6.2" H. Fit for 10 - 20 gallon small tanks. Suitable for the breeding and feeding of various ornamental fish, shrimp or fish 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. Press the sponge into the tank to fully absorb tank water to make it 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.

Rank No. #3

AQUANEAT Sponge Filter,Aquarium Sponge Filter for Fry Betta Shrimp Nano Fish Tank with Accessories (Up to 20Gal)

Sponge filter provide both mechanical and bio filtration, also, the air infusion chamber produces minute bubbles which increase the oxygen solubility
Easy to set up & clean: simply install an airline into the unit and turn on the air pump, simply rinse and squeeze sponge in tank water
Safe for fish: excellent for small size fish like dwarf cichlid, guppy, killifish etc., or for hatcheries, maternity tanks, and fry tanks, as the filter produces minimal current and has almost no way to suck the fish through the filter
Recommend tank size: up to 20 gallon; Dimension: 3.0"D X 6.5"H
Includes: 1 sponge filter, 4ft airline tubing, 4 suction cups, 1 control valve, 1 tee, 1 non-return check valve

Rank No. #4

AQQA Aquarium Sponge Filter Submersible Fish Tank Filter Ultra Quiet Aeration Bio Sponge Corner Filter for Breeding Fry Betta Shrimp Fish Tank (Small for 5-20 Gallon)

【Ultra Quiet Submersible Filter】 AQQA Aquarium Sponge Filter is air-powered and ultra-quiet, providing efficient filtration without disturbing your fish; (NEED TO CONNECT AN AIR PUMP to Work, Air pump and air hose are NOT INCLUDED in the package) Please prepare a suitable air pump for this filter according to your tank size.
【Mechanical and Biological Filtration】 The sponge filter provides mechanical filtration, the vertical pattern design increases the filtering area and helps to filter efficiently; Bio ceramic media balls provide biological filtration, it helps with decomposing harmful substances and cultivating beneficial nitrifying bacterial at the same time.
【Replaceable Filter Media】 The filter sponge and bio ceramic media balls are both replaceable. You can easily remove the sponge from the filter for cleaning or replacement. (2 sponges in the package in total) The bio cermaic balls are also washable and reusable, or you can change them with other filter media as you demand.
【Multi-functional Aquarium Filter】 The fish tank sponge filter combines filtration, aeration and water circulation in one, helping to keep your fish tank crystal clean and provide an excellent living environment for your aquarium inhabitants.
【Wide Application】 AQQA sponge filter can work great in breeding fry tank, shrimp and betta fish tank, freshwater and marine tank. Small filter is suitable for 5-20 gallon tank, medium filter is suitable for 20-110 gallon tank. Please squeeze the sponge repeatedly until the sponge is full of water, so that the filter can sink on the bottom of the aquarium.

Rank No. #5

Pawfly Aquarium Bio Sponge Filter Quiet Betta Fry Shrimp and Small Fish Foam Filter for Fish Tanks up to 20 Gallons, 3 Pack

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.
Small Size: It measures 2" D x 6.2" H. Fit for 10 - 20 gallon small tanks. Suitable for the breeding and feeding of various ornamental fish, shrimp or fish 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. Press the sponge into the tank to fully absorb tank water to make it 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.

Rank No. #6

AQUANEAT Aquarium Sponge Filter Breeding Fry Betta Shrimp Nano Fish Tank 4pcs (Middle up to 20Gal)

Sponge filter provide both mechanical and biological filtration, also, the air infusion chamber produces minute bubbles which increase the oxygen solubility
Easy to set up& clean: simply install an airline into the unit and turn on the air pump, simply rinse and squeeze sponge in tank water
Recommend tank size: up to 20 gallon, excellent for small size fish like dwarf cichlid, guppy, killifish etc., or for hatcheries, maternity tanks, and fry tanks, as the filter produces minimal current and has almost no way to suck the fish through the filter
Dimension: 3.0"D X 6.5"H
Includes: 4 pcs of sponge filter

Rank No. #7

ALEGI Aquarium Sponge Filter for 20 Gallon Fish Tank, Betta, Nano, Shrimp, Fry, Biochemical Filter with Airline Tubing, Check Valves, Suction Cups

Sponge filter provide both mechanical and biological filtration
Easy top set up & clean: simply install an airline into the unit and turn on the air pump, simply rinse and squeeze sponge in tank water
Using an air hose, connect one end to you air pump and the other end to this filter,and equipped with a check valve on air hose, to prevent water backflow and air pump damage due to power outage. It is a great way to clean and oxygenate your fish tanks.
Recommend tank size: up to 20 gallon
Includes: 2 Pcs of sponge filter, 8 feet air tubing, 2 Non-rutrun check valves, 8 suction cups, 2 Y-connector

Rank No. #8

Pawfly Aquarium Bio Sponge Filter Small Fish Foam Filter with Airline Tubing Suction Cups Check Valve Connectors and Control Valve for Fish Tanks up to 20 Gallons

Accessories Included: Come with 6.5-foot airline tubing, an air control valve, 4 suction cups, a straight and a T-shape connectors and a check valve. Air pump not included.
Fine Sponge Filtration: It provides mechanical and biological filtration and traps debris or wastes without sucking up your fish, keeping a crystal clear water tank.
Small Size: It measures 2" D x 6.2" H. Fit for 10 - 20 gallon small tanks. Suitable for the breeding and feeding of various ornamental fish, shrimp or fish 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. Press the sponge into the tank to fully absorb tank water to make it sink to the bottom.

SaleRank No. #9

Aquapapa Bio Sponge Filter Air Pump Driven Up to 20 Gal Breeding Fry Betta Shrimp Fish Tank Aquarium (Ship from CA USA) (Small 4-Pack)

Bio Sponge filter is good for aquarium and provides both mechanical and biological filtration. The air infusion chamber produces numerous minute bubbles which promote gas exchange and increase dissolved oxygen level in tank water.
It's easy to set up. Just connect the unit with an air pump thru airline tubing (Air pump and airline tubing Not included).
These sponge filters do not trap fish fry and are safe for small size fish like dwarf cichlid, guppy, killifish, etc. They are useful for as breeding filter or as secondary filter. Or they can be used as pre-filtration unit by fitting to an external or a top filter.
Filter Dimensions: 3.0"D x 6.5"H - Recommended tank size up to 20 Gal.
Package includes: 4 pcs of sponge filters in a box.

Rank No. #10

Pawfly Aquarium Bio Sponge Filter Quiet Betta Fry Shrimp and Small Fish Foam Filter for Fish Tanks up to 20 Gallons, 4 Pack

Fine Sponge Filtration: It provides mechanical and biological filtration and traps debris or wastes without sucking up your fish, keeping a crystal clear water tank.
Small Size: It measures 2" D x 6.2" H. Fit for 10 - 20 gallon small tanks. Suitable for the breeding and feeding of various ornamental fish, shrimp or fish 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. Press the sponge into the tank to fully absorb tank water to make it 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.

Rank No. #11

AQUANEAT Aquarium Bio Sponge Filter Breeding Fry Betta Shrimp Nano Fish Tank,3pcs (Middle up to 20Gal)

Sponge filter provide both mechanical and bio filtration, also, the air infusion chamber produces minute bubbles which increase the oxygen solubility
Safe for fish: soft sponge material, traps floating debris and won't suck up your fish
Easy to set up & clean: simply install an airline into the unit and turn on the air pump, simply rinse and squeeze sponge in tank water
Recommend tank size: up to 20 gallon, excellent for small size fish like betta, dwarf cichlid, guppy, killifish etc., or for hatcheries, maternity tanks, nano tanks and fry tanks, as the filter produces minimal current and has almost no way to suck the fish through the filter
Includes: 3pcs of sponge filter; Dimension: 3.0"D X 6.5"H

Rank No. #12

AQUANEAT Double Bio Sponge Filter, Quiet Aquarium Filter with Ceramic Media Balls, Airline Tubing and Valves Air Pump Driven, for Betta Fry Shrimp Tank (Small Up to 20 Gal)

Rank No. #13

AQUANEAT Aquarium Sponge Filter Replacement, Fish Tank Foam Replacement,4 Packs (Middle up to 20Gal)

Replacement sponge for sponge filter
Sponge filter provide both mechanical and bio filtration, soft sponge material, traps floating debris and won't suck up your fish
Easy to set up: simply install the replacement sponges into the arms holding the sponges, washable and reusable
Dimension: 3"D x 2.75"H
Package includes: 4 pieces of replacement sponge

Rank No. #14

capetsma Aquarium Sponge Filter Fish Tank Filter 20 Gallon 40 Gallon Sponge Filter for Betta Fry Shrimp Tank, Driven by Aquarium Air Pump.

All in one Filtration - 7-layer ribbing shape sponge + bio ceramic balls makes a great aquarium filter, they work together to provide physical, chemical, and biological filtration for both freshwater and saltwater fish tank, continuously offer healthy environment for your lovely fishes.
Efficiently Operated - With the help of strong air pump, this fully submersible sponge filter cycles water at 175 Gallons per Hour (GPH) for tanks up to 55 Gallons in size. At the same time, it will improve dissolved oxygen level by aerating water.Pls notice the air pump is not included. For larger tank, you may need 2 sponge filters 55 gallon.
Removable Sponges - the 2 sponges provide physical filtration, they can remove harmful substance in water and the 60ppi aperture offer more area for beneficial part to live on. You can easily take down the 2 sponges when you need to clean or replace it. Don't use tap water, just rinse or squeeze the sponges using the aquarium water.
Refillable Filter Media - The bio balls remove harmful contaminants. Also they help increase oxygen level in your tank. You can replace the bio ceramic balls as per your need. It is great for fry aquariums and brine shrimp hatcheries because it can prevent young fry from being caught in the filter media.
Compact Design - All parts of our sponge filter are detachable for cleaning, with 2 strong suction cups, we can stick the internal filter firmly to anywhere in the tank . The water outlet pipe can be extended and rotated, we can change direction of water flow by rotating the outlet port or adjusting it above or below the waterline.It is great for fry aquariums and brine shrimp hatcheries because it can prevent young fry from being caught in the filter media.

Rank No. #15

Hydro-Sponge Pro II Premium Reticulated Foam Sponge Filter for Aquariums up to 20 Gallons

The Hydro-Sponge Pro filter employs premium reticulated foam to deliver high flow rates, whisper-quiet operation, and even cleaner water for freshwater and saltwater fish without cartridge replacements or an impeller
Quiet and easy to clean - simply rinse and squeeze in used tank water (not tap water!) to maintain nitrogen-fixing capability. Inner canister of filter can be filled with activated charcoal, carbon, or other media.
Hooks up directly to a powerhead or pump, and the diffuser can replace air stones. To set up, simply assemble, bury the base, and connect an air hose.
Soft foam filters across a wide surface area, creating bubbles to reduce protein buildup and increase oxygen. Ideal for low-current breeding, betta, discus, and turtle tanks.
Fast-cycle a new tank by transferring a filter sponge from old to new. For even more pristine water and longer filter life, combine with ATI Filter Max pre-filtration.

Rank No. #16

DEGGOX Aquarium Bio Sponge Filter Kit for 10-100 Gallon Shrimp Nano Breeding Fry Betta Fish Tank(with 2M Spare Air Tube)

【Duble Filter】The sponge filter provides mechanical filtration, Bio ceramic media balls provide biological filtration, it helps with decomposing harmful substances and cultivating beneficial nitrifying bacterial at the same time.
【Easy to use】 Use a 4mm air tube to connect the end to the air pump and the other end to this tank filter(Note: The air pump is not included, you need to choose the air pump according to the size of your fish tank).
【Washable And Reusable】Filter sponge and bioceramic media balls are replaceable and reusable.The sponge medium is harmless to fish and it's suitable for both fresh and saltwater environments.
【Safe and Quiet】Microporous biochemical filter sponge without sucking up your fish and very quiet.DEGGOX sponge filter can work great in breeding fry tank, shrimp and betta fish tank, freshwater and marine tank.
【Recommend Tank Size】Up to 55 gallon,Dimension: 3.94"L x 3.94"W x 3.94"H.

Rank No. #17

ALEGI 4pcs Small Aquarium Bio Sponge Filter with Suction Cups, Check Valves for 5 Gal, 10 Gal, 20 Gal Breeding Fry Betta Shrimp Fish Tank (Up to 10 Gallon 4 Pcs)

Sponge filter provide both mechanical and biological filtration
Easy top set up & clean: simply install an airline into the unit and turn on the air pump, simply rinse and squeeze sponge in tank water
Using an air hose, connect one end to you air pump and the other end to this filter,and equipped with a check valve on air hose, to prevent water backflow and air pump damage due to power outage. It is a great way to clean and oxygenate your fish tanks.
Recommend tank size: 10 Gallon
Includes: 4 Pcs of sponge filter, 4 Non-rutrun check valves,4 contral valves, 4 suction cups

SaleRank No. #18

Aquapapa Aquarium Air Pump Kit for 3-20 Gallon Fish Tank, 3W 48GPH Oxygen Aerator for Sponge Filter with Air Stone, Airline Tubing, Check Valve, Hydroponic Air Bubbler Pump

Good for fish tank 5-20 Gallon. Compact size with a dimension of 3-1/4”L x 2-1/8”W x 1-5/8”H. Power cord: 39” long. Power Input: 110V/60Hz.
Strong Airflow and low consumption. 48 GPH with single output; Pressure: 0.018kba; Great to run small sponge filter and air bubbler providing sufficient dissolved oxygen for fish.
Quiet operation. 4 soft rubber feet design to reduce vibration and noise for quiet performance.
Package includes: 1x Air Pump, 1x 4 ft long 3/16” Standard Airline Tubing, 1x Air Stone, 1x Check Valve.

Rank No. #19

FRIRODSAY Fish Tank Filter Aquarium Sponge Filter Quiet Small for 1-20 Gallon Aquariums Detachable with Activated Carbon and Air Stone

Multi-filtration Functions: This fish tank filters combines biochemical filtration, oxygenation and physical filtration in one.
Easy to set up and disassembled: All filter media of this product are replaceable and cleanable, include: sponge filter, filter stone, activated carbon, air stone.
Wide Application: Safe for fish, suitable for betta tank, shrimp tank, breeder tank, goldfish, guppies, fry, and baby fish tanks etc.
Mini Design:3.1x3.1x3.1 inch, Save space, more beautiful. This small filter is recommend for 1 - 20 Gal fish tank.
Super Quiet and Efficient: 4 suction cups at the bottom make filtration and oxygenation very quiet. Note: Need to connect with air pump and air tube (Not Included).

Rank No. #20

hygger Aquarium Double Sponge Filter, Comes with 2 Spare Sponges (S)

【Multi-filtration functions】this sponge aquarium filter combines bio-filtration, oxygenation and physical filtration in 1 and also makes small water flow, which can ensure the excellence of the water quality. Helps your small fish or shrimp to live a happy, healthy life. Note: NOT come with air pump
【Filter Demension】plus the sponge filter with media balls takes up no more room. Small filter is 6" in width and 9" to 13." in height, the sponge inside circle diameter is 0.39 inch, suggest for 10 to 40 gallon fish tank. Medium filter is 6.3" in width and 9' to 13 in height, the sponge inside circle diameter is 0.59 inch, suggest for 15 to 55 gallon fish tank. For larger tank you may need 2 of this filter
【Package Includes】1 double sponge filter with 2 containers +1 bag of ceramic media balls + 2 pare sponges(packed in the 2 containers). This aquarium filter must be used with an air pupm and a standard size 4mm air hose, please note pump and air hose are not included. Please choose a powerful enough air pump according to your fish tank size for this filter
【Detachable Fine Sponges 】you can easy to take down the 2 sponges from the filter to clean or replace it, the 2 sponges are fine 60ppi not coarse, which means more surface area for beneficial little creatures to live on. Don't use tap water to clean it, just rinse or squeeze the sponges by using the aquarium water
【Easy to use】all the parts of this filter are detachable, you can easily to assemble them together, with 2 strong suction cups you can stick the filter firmly to any tank position under water, withouting floating. The water oulet tube can be extended and rotated, you can adjust the outlet to above or below the waterline

Last update on 2023-08-01 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

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FAQ:

Q: What is the best filter for a 10 gallon tank?

A: Undergravel filter is another best filter for 10 gallon fish tank aquarium; Moreover, this filter placed on the under gravel, and with the help of uplift tubes, pull the water and clean it properly. This filter pumps the water in two ways; one of them is airstone, and the other is an air pump. Nov 17 2019

Q: Are sponge filters really that good?

A: Generally, sponge filters are good for most fish tanks . However, there are instances where they really shine. Sponge filters are excellent due to their gentle flow. This allows for set-ups for fry, betta and shrimp tanks that thrive in low-flow filtration.

Q: What is the best aquarium sponge filter?

A: The Bacto Surge High Density Foam Filter is the best sponge filter because it has a superior foam density that makes it just a better overall filter than most on the market.

Q: What size sponge filter?

A: Small filter is 6″ in width and 9″ to 13.” in height, the sponge inside circle diameter is 0.39 inch , suggest for 10 to 40 gallon fish tank. Medium filter is 6.3″ in width and 9′ to 13 in height, the sponge inside circle diameter is 0.59 inch , suggest for 15 to 55 gallon fish tank. For larger tank you may need 2 of this filter