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20 Best External Aquarium Pumps of 2023 – Romance University

After hours researching and comparing all models on the market, Romance University finds out the Best External Aquarium Pumps of 2023. Check our ranking below.

2,550 Reviews Scanned

Rank No. #1

DC12V Submersible Clear Water Pump with Brass Male Thread Nozzles, 5 Level Adjustable Power (9-15W), 14½ ft High Lift, Max 210 GPH, Fountain Circulation Pumps for Aquarium, Fish Tank, Rockery, Bonsai

Voltage: DC 12V (used with Adapter/Switch Mode Power Supply (SMPS) /Stable DC voltage sources), DC connector, Adater are not included. DC Connector Size: 5.5x2.1mm, adapter are not included.
Max lift height: 14' 9" (450cm) NOTE: Lift height is a max height the water goes up, after connecting the water pipe to the nozzle.
5 Level adjustable power (9-15W), Flow Rate: 800L/H (210 GPH), 680L/H(180GPH), 560L/H(150GPH), 440L/H(115GPH), 320L/H(84GPH). Note: Different Wattage, different Flow rate.
Working temperature: 0-60°(32~140℉), the outlet/Inlet outside diameter is 20.5 mm, Included 2 piece brass Nozzles, easily connect with a hose . detachable and Cleanable, No need any tools to detach it.
Non-self-priming pump. Submersible Water Pump must be completely immersed in water when using.

Rank No. #2

hygger 800GPH Quiet Submersible and External 24V Water Pump, with Controller (30%-100% Settings), Powerful Return Pump for Fish Tanks, Aquariums, Ponds, Fountains, Sump, Hydroponics (25W, 9.8ft)

🐠【Demension & Specifications】Powerful and ultra quiet water return pump. Input voltage: 100-240V 50/60HZ. Output voltage: DC 24V. Pump Dimension (LxWxH): 6.2 x 3.1 x 5 inch. Cord length from the pump to controller is 6ft, the power cord length is 6.6ft. Wattage/flow/head: 25W/800GPH/9.8ft head. Please look the chart for each models
🐠【 Auto Shut Off When No Water】 Plug the power to turn this water pump on, unplug the power to turn it off. It is protected in case there's no water, the pump will auto shut off when no water is sensed or water gets too low. Comes with 2 kinds of removable water intake screens,1 for normal water level and the other for low water level (higher than 0.8inch)
🐠【Adjustable Flow Speed】This aquarium water pump has an external Led display controller, with 71 flow speed settings, you can control the flow rate from 30% to 100% of the top speed flow. 3 buttons on the controller: "Up" "Down" "Pause"
🐠【Internal & External Use】 Hygger dcp water pump can be ran externally or be submerged. Please note the controller is not waterproof, must be placed indoors. The pond pump comes with screws, o rings, pipe connection fittings. You can connect 1" or 3/4" pipes to this pond pump
🐠【Durable Water Pump】Wear-resistant ceramic shaft and magnetic drive makes this water pump a long service life. No copper element, can be used for fresh water or salt water. Need 10ft extension cord for the controller and pump, please go for ASIN B08CB69DSF

Rank No. #3

Orlushy 24V DC Aquarium Water Pump Ultra-Quiett Return Pump with up to 20 Speed Settings and 3 Operation Modes for Submersible or External Use(1056GPH)

【Ultra-Quiet Motor】: Orlushy DC water pump adopts sine wave technology, running super quietly, causing minimum sound effect to daily life of the users.
【 Specification & Dimensions】: Output voltage: DC 24V, wattage: 28w, max flow rate: 1056GPH, max head height: 11.5ft, dimension: 6.7’’×3.3’’×4’’, please choose the right pump according to our size chart.
【 Adjustable Flow Speed And Modes】: Variable speed control with more than 20 different speed settings, offer precise adjustment of water flow to reach the optimum performance. Three operation mode settings: Constant Flow Mode, Wave Mode, Feed Mode.
【Submersible & External】: Orlushy DC water pump can be submersible or external(inline) use, with wear-resistant ceramic shaft is suitable for salt and fresh water aquarium.And it is an ideal water pump for indoor use.
【 Multiple Safe-Protection】: IC electronic detection, and low voltage DC24V power supply. The water pump is Equipped with automatic power-off, the controller displays ERR, the pump stop, preventing the occurrence of faults caused by low water level.

Rank No. #4

AMOSIJOY 172GPH Canister Filter, Ultra-Quiet External Aquarium Filter with Free Media for Large Fish Tanks and Aquariums (172GPH)

AMOSIJOY 172GPH (650L/H) canister filter is recommended for 30gallon fish tank and the required minimum water level of the tank must have 70cm distance from the top of the canister filter. Please measure your fish tank first before purchasing.
Amosijoy Canister Filter：AMOSIJOY external aquarium filter runs at 172GPH(650L/H), wattage is 8w, dimension is 12.2’’×7.9’’× 6.1’’. It is suitable for freshwater fish tanks, turtle tank and aquariums.
Lift-draw Style Vent Valve & Flow Regulating Handle：After power up, drain the air out of the pump and supply water for the pump by lifting the lift-draw style vent valve, and then the filter will enter proper working condition without the need of additional water adding. By controlling the top water flow regulating handle, the water flow could be adjusted from maximum to minimum, even to zero.
Ultra-quiet Operation: With built-in motor in the lid of the canister filter, the filter runs ultra quietly. Low wattage and high flow without air inside the filter, generates no noise. The sound is ≤ 30db, your family life will not be affected, at the same time achieving water purifying effect.
Filter Basket: Amosijoy 172GPH external canister filter has one layer of media basket, in which different kinds of filter materials can be placed to purify the water, ensuring the water quality of the living environment for aquatic life. You can add some other filter media depending on your needs. Complimentary bio balls, ceramic bio balls speed up decomposing the fish feces, avoiding frequent change of cotton filter.

Rank No. #5

GENEDEY DC 12V 1/2" Brushless Magnetic Drive Centrifugal Submersible Water Oil Pump Ultra Quiet 800L/H 5M/16ft for Fish Tank Fountain Pool Pond Aquarium Solar Water Circulation System

Low noise (<35dB), small size, high efficiency, low power consumption, strong anti-interference ability, stable operation, safe and pollution-free.
The stator and circuit board of the motor are potted with epoxy resin and completely isolated from the rotor, which solves the leakage problem caused by long-term diving of the motor-type DC water pump, and is completely waterproof (waterproof grade: IP68).
The water pump shaft adopts high-performance ceramics (zirconia), which has high precision and good wear resistance. It adopts the precision matching of high-precision shaft sleeve and ceramic shaft, and has a long service life.
12V G1/2" male thread; Cable length: Approx. 50cm (19.7"); Maximum flow: 800L/H 210 GPH, Maximum llift height: 5M/16ft, Working temperature: 0℃ - 65℃/(32°F - 149°F).
Amphibious (installation position is lower than the liquid level for external use). The pump is a centrifugal pump, suitable for fountains, swimming pools, pond, pet aquariums, fish tanks, solar circulation systems, water circulation systems, hydroponic systems, etc. If there is any problem with the product, please feel free to contact me, we will give you a satisfactory solution.

Rank No. #6

Lifegard Quiet One Pro Submersible/External Aquarium Pump - Safe for Ponds, Fountains, Aquariums, Saltwater, Freshwater Tanks – UL Listed – 1022 GPH

QUIET RUNNING POND, AQUARIUM PUMP: Keep the water in your pond, saltwater aquarium or freshwater tank clear and free from debris and dirt with this Quiet One Pro Submersible Aquarium Pump from Lifegard. The internal recirculation works to eject obstructing debris while minimizing the risk for overheating.
ECO-FRIENDLY EXTERNAL AQUARIUM PUMP: Use less energy without losing the power you need to circulate water in your ponds, aquariums or external water feature with this aquarium pump that reduces energy consumption without sacrificing power. This UL Listed aquarium pomp features high-powered rare earth magnet ECO-SAV technology.
PUMP MORE GALLONS PER HOUR: The Lifegard Quiet One Pro Submersible Aquarium and Pond Pump is designed to circulate water at a speed you can appreciate. Choose from models that generate 106, 296, 594, 819, 991, 1400 and 1664 gallons per hour.
HIGH-TECH OPERATION: This pond and water garden pump is equipped with either a 6-foot or 20-foot cord for added convenience and an Italian design that offers an extremely quiet operation for indoor or outdoor use.
LIFEGARD Brand is YOUR GO-TO RESOURCE FOR AQUARIUM, POND & AQUACULTURE PRODUCTS: Lifegard Aquatics features an extensive line of high-quality aquaculture products that include fountains, pumps, bulkhead fittings and commercial aquatic and pond equipment. From crystal aquariums to full spectrum LED lighting, trust in Lifegard for all of your aquatic needs.

Rank No. #7

AQQA 800-3200GPH Controllable Water Pump,Circulation Make Wave/Feed Mode/20 Options Flow Adjustable Multifunction Submersible or External Powerful Return Pump for Saltwater & Freshwater

🌊【Multifunction Energy Saving Ultra-quiet AC Water Pump】①Used SINE Wave technology,makes the pump run smooth②Silicone shockproof base,working quiet③AC motor with magnetic drive and ceramic shaft design saves more energy, is safer, and ensures a long pump life.④Large flow guarantee,super powerful,high lift⑤Output voltage:110V/60Hz⑥multiple flow rate choices：800GPH 1200GPH 1600GPH 2400GPH 3200GPH
🌊【Constant Speeds and Wave Maker Two Modes,Submersible or External Dual-use】“1-20” is shown on LED display.The “1” means the pump is set to constant flow mode,Press the “Set”button to show“2-20”,this is the wave make model,Two model both are 20 option adjustable speed flow settings.Comes with 2 kinds of removable water intake screens,one for normal water level 360°intake and the other for low water level,can be used to clean fish tanks.
🌊【LED External Controller with Feed Model】Simple and easy to operate LED controller,HD display,can be attached to glass or ceramic tiles( Not waterproof, can't be put into water),Press the“Feed”button to adjust feeding time from 10 minutes to 30 minutes. In feed mode, the pump will stop working,After the set eating time is over, the pump will automatically restart to work.
🌊【Internal & External Use Return Pump, Equipped with Multi-size Nozzles】this water pump can be ran externally or be submerged.Cord length from the pump to controller is 16ft, the power cord length is 6.6ft. with full set of accessories like o rings, various sizes pipe connection fittings.Simple disassembly no need any tools to detach it and very easy to clean.
🌊【Automatic Shut Off Protection,Suitable Saltwater & Freshwater Systems】When the pump detects no water, default phase or over voltage, it will power off automatically. The motor will also power off if the rotor becomes blocked,Once the pump detects no water five times, it will shut off automatically and display E-01.suitable for saltwater,freshwater,fountains,ponds,sump,hydroponics,One year warranty.FREE return and exchange, please rest assured to buy.

Rank No. #8

SICCE Syncra Silent NANO Multifunction 110 GPH Submersible Water Pump | Italian Made 2.8W Ultra Quiet Durable Aquarium Fish Tank, Fountian, Pond, Hydroponics, Terrarium Black | Freshwater & Saltwater

40-110 gph

Rank No. #9

Polar Aurora 3-Stage Aquarium External Canister Filter with 9-watt Light 370 GPH Builtin Pump Kit Canister NEW(370GPH)

Good for up to 100 gallon fish tanks.Maximum flow rate of 370GPH from built in pump Pump Power: 35W
3 media trays capable of handling your choice of filtration media; Comes with an adjustable spray bar. This is a helpful feature if you want to adjust the output flow from the filter
Convenient self-priming pump that eliminates the need for manual siphoning; Single valve disconnect & priming pump ease routine maintenance
Built in 9 Watt light for controlling algae spores and promoting clear water
The three flexible media trays allow you to add other filtration media such as SunSun's activated carbons, ceramic rings or bio-balls to achieve excellent mechanical, chemical, and biological filtration. Compare with similar items

SaleRank No. #10

Eheim Universal Pump 600 (1048-790), 120V,Black

World-renowned aquarium pump boasts exceptional quality and reliable performance
Package Dimensions: 10.16 H x 14.986 L x 20.828 W (centimeters)
Package Weight: 2.2 pounds
Made in Germany

Rank No. #11

Spaces Places DP430 Pump for Ponds, Fountains, Gardens, Aquariums, Statuary, or Small Water Displays 8'2-16' Power Cord and Foam Pre-Filter, 8.2' Max Height, Black

SUBMERSIBLE FOUNTAIN PUMP: Enhance your water feature with his device. Pumps oxygen into water, creating a healthy environment for plants and fish. By adding movement to the water, you avoid pond settling and becoming stagnant.
INDOOR OR OUTDOOR USE: Ideal for small fountains and ponds up to 6 ft. x 6 ft. x 1.5 ft. Max height of fountain is 8.1 ft. Pumps water at adjustable rate, up to 430 GPH.
LOW MAINTENANCE: Simply clean filter by disconnecting from pump and rinsing with clean water.
EASY TO OPERATE: Completely submerge pump under water, place in sturdy location, and plug into nearest outlet. Fits 1/2 " or 5/8" tubing.
INCLUDED: Fountain pump 16ft power cord, and a large washable foam filter. 2-year limited manufacturer's warranty.

Rank No. #12

Polar Aurora Free Media 265GPH / 370GPH / 525GPH External Aquarium Filter with Builtin Pump Kit Canister (370GPH)

Good for up to 100 gallon fish tanks.Maximum flow rate of 370GPH from built in pump Pump Power: 35W
3 media trays capable of handling your choice of filtration media; Comes with an adjustable spray bar. This is a helpful feature if you want to adjust the output flow from the filter
Convenient self-priming pump that eliminates the need for manual siphoning; Single valve disconnect & priming pump ease routine maintenance
Built in 9 Watt light for controlling algae spores and promoting clear water
The three flexible media trays allow you to add other filtration media such as SunSun's activated carbons, ceramic rings or bio-balls to achieve excellent mechanical, chemical, and biological filtration. Compare with similar items

SaleRank No. #13

JEREPET 1850GPH 55W16FT Aquarium 24V DC Water Pump with Controller, Submersible and Inline Return Pump for Fish Tank,Aquariums,Fountains,Sump,Hydroponic,Pond,Freshwater and Marine Water Use

Specifications：1850GPH Max flow aquarium pump, ECO 55W DC24V return pump, 14.8 feet max lift;pump dimension (L*Wx*H):7.5*3.5*4.8 inches.
DC Controllable water pump：6 speed adjustable,control the flow from 30% to 100% of max flow,with 10 minutes feeding mode and wave maker function;
Ultra quiet aquarium water pump:used seal impeller and ceramic shaft,efficient and quiet operationm, nosie level lower than 30 dba;
Auto shut off protection return pump: the pump will automatically shut off when the pump run dry or blocked;
Wide applicaion DC pump: can be used as salt water or fresh water aquarium sump pump, fountain pump,hydroponics pump and waterfall pump;can be used as external/inline or sumbersible pump;

Rank No. #14

Orlushy DC-5000 Silent Swirl Controllable DC aquarium Pump 40W 1320GPH-marine wavemaker return pump with sine wave Controller for salt/Freshwater coral reef fish tank sump Circulation

★sine wave technology , Ultra silent operation.
★Variable speed control with up to 20 different speed settings,offering precise adjustment of water flow for optimum performance.
★Dc return pump modes:steady flow mode ,wave mode ,feed mode.
★NO Copper components parts, Suitable for marine and fresh water,safe for any tank！
★Low voltage, safe，IC Electronic Detection, Motor protection if rotor is blocked. With wear-resistant ceramic shaft, longer operation life.

Rank No. #15

JAJALE 2250 GPH Submersible External Water Pump Ultra Quiet for Pond, Aquarium Fish Tank Fountain Hydroponics

Our pumps are epoxy sealed and pass the voltage withstand test in compliance with the UL standard. 100% inspection is fulfilled for Quality Control according to ISO. The Motor impeller shaft is made of ceramic which is resistant to corrosion. While working, they are incredibly quiet and efficient and energy-saving with high lift. It can raise the water column to Max Head: 16.4 ft (5m). (Make sure to connect the water pipe to the smallest nozzle and make sure the joint is tightly sealed).
These pumps are easy to clean and no tools are required to install, uninstall, or disassemble. Appearance volume：L 7.5 in. W 4 in. H 6.5 in.
These amphibious pumps can be used in both saltwater and freshwater.
This Amphibious pump is capable of the following setups – return pump, closed-loop, inline, and submersible. When being used as an external pump, make sure air is unable to get into the hose, because the pump is only intended to keep water flowing. This pump has a “smart shutdown”. If there is no water, the pump will automatically shut off.
Powerful AC motors can produce 85w Power，Maximum water flow 2250 GPH – 8500 L/H，It has an adjustable flow. The wire is 6-foot 3 Prong Grounded Plug SJTW Cord (US), UL certification.

Rank No. #16

CURRENT USA eFlux DC Flow Pump with Control 1900 GPH | Loop Controllable Aquarium DC Return 380-1900 GPH | Quiet, Submersible or External | Fish Tank, Sump, Pond, Freshwater and Saltwater Marine Use

Sealed magnetic drive pump runs virtually silent
Adjustable flow rate from 0 to 100%
DC voltage - up to 65% energy savings
Feed Mode – idles pumps for 10 minutes during feeding
Communicates with LOOP network, providing active feedback on pump issues

Rank No. #17

Uniclife Aquarium 320 GPH Submersible and Inline Water Pump 22W 5ft High Lift AC 120 V Quiet Adjustable Return Pump with 6 ft. Power Cord for Fish Tanks Pond Waterfalls Fountains Sumps and Gardens

Submersible/Inline Use: It can be fully submerged in water or used externally. Be sure to pour water into the pump before external use (Inlet & Outlet Nozzles Included). Ideal for fish tanks, ponds, sumps or gardens.
Adjustable Flow Rate: Size: 4.4" L x 2.3" W x 3" H; Max flow rate: 320 GPH; Output voltage: AC 120 V; Power: 22 W; Max lift: 5 ft. Feature a sliding knob on its side to freely control water flow as needed.
Detachable & Quiet: Easy to detach the pump and clean all parts without using any tool. And the 4 strong suction cups hold the pump steadily and keep it quiet during work.
Strong & Enduring: The pump has stable performance and long life-span of over 25,000 hours due to its protective ceramic shaft and bearing. Strong to endure running 24/7.
Pump Accessories: Come with 1 INLET NOZZLE for water pipes with 3/4" inner diameter and 2 OUTLET NOZZLES for water pipes with 1/2" and 2/3" inner diameters. Also contain a 6-foot waterproof power cord with a 2-prong plug preventing electric shock.

Rank No. #18

FEDOUR 160GPH-400GPH Aquarium Canister Filter, 7W-15W Fish Tank External Filter, Aquarium Hang on Filter with Biochemical Sponge, Ceramic Balls for up to 180 Gallon Fish Tank (400GPH)

【Specifications】Powerful aquarium filter, Max Water Flow: 400GPH(1500L/H), Power: 15W, Size of the bucket:11.4*7.9*7.9in(29*20*20cm), Length of power cable: 4.3Ft( 1.3m), Suitable for: up to 180gallon tank. Both suitable for fresh water and salt water.
【Adjustable Water Flow】Rotating the inlet and outlet valves of this canister filter can adjust the flow of water in and out, and it is easy to get the appropriate water flow. The telescopic tube at the water intake can be adjusted up and down to better fit the fish tank. The shower pipe outlet can increase the amount of dissolved oxygen in the water and can also rotate 360°.
【Super Quiet】This fish tank filter has a unique structure, the water pump is installed at the bottom of the filter barrel, and the thickened filter cotton is wrapped around it, which effectively isolates the noise. The vibration of the external filter is also very small, you can hardly hear any sound of the motor, only the sound of water flow. If the spray bar is installed underwater, you will hardly hear any sound.
【Perfect Filtration Effect】This fish tank external filter comes with filter media. 5 layers of filter cotton, 1pc black biochemical cotton, 1pc yellow density cotton, 1pc yellow density cotton, 1pc blue physical filter cotton, and 1pc white physical filter cotton, effectively filter out impurities in the water. Comes with 2.2lb (1kg) ceramic balls, if you need to use these ceramic balls, you can take out a piece or two of filter cotton to make space.
【Built-in Water Pump】400GPH powerful aquarium external filter, 15W built-in submersible pump, strong suction, fast water absorption.

Rank No. #19

DOITOOL Type Circulating Submersible Pump Fish Tank Pond Pumps Submersible Outdoor Silent Water Booster Pump Water Pump Submersible Boosting Pump Engineering Plastics Drain Pump Automatic

Fish tank drain pump: water pump- it can be used for diving or not for diving, convenient and easy to use.
Aquarium vacuum pump: occupy less space and easy to install for fish tank or aquarium.
Fountain pump with light: portable utility pump: easy to use and simple to install, time saving and effortless.- rated : 600- 800m3/ h
Submersible fountain pump: with suction cups at the bottom of the pump help keep it in place, so you can stick it vertically or horizontally to the right side of the aquarium.
Threading tool: ponds, fish tanks, fountains, waterfalls, hydroponic systems, and irrigation systems.

Rank No. #20

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How Do You Buy The Best External Aquarium Pumps?

Do you get stressed out thinking about shopping for a great External Aquarium Pumps? Do doubts keep creeping into your mind? We understand, because we’ve already gone through the whole process of researching External Aquarium Pumps, which is why we have assembled a comprehensive list of the greatest External Aquarium Pumps available in the current market. We’ve also come up with a list of questions that you probably have yourself.

Romance University has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for External Aquarium Pumps that you consider buying. Your questions might include the following:

Is it worth buying an External Aquarium Pumps?
What benefits are there with buying an External Aquarium Pumps?
What factors deserve consideration when shopping for an effective External Aquarium Pumps?
Why is it crucial to invest in any External Aquarium Pumps, much less the best one?
Which External Aquarium Pumps are good in the current market?
Where can you find information like this about External Aquarium Pumps?

We’re convinced that you likely have far more questions than just these regarding External Aquarium Pumps, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for External Aquarium Pumps, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible External Aquarium Pumps. Make sure that you are only using trustworthy and credible websites and sources.

Romance University provides an External Aquarium Pumps buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available External Aquarium Pumps currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

Brand Value: Every brand of External Aquarium Pumps has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
Features: What bells and whistles matter for an External Aquarium Pumps?
Specifications: How powerful they are can be measured.
Product Value: This simply is how much bang for the buck you get from your External Aquarium Pumps.
Customer Ratings: Number ratings grade External Aquarium Pumps objectively.
Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their External Aquarium Pumps.
Product Quality: You don’t always get what you pay for with an External Aquarium Pumps, sometimes less, and sometimes more.
Product Reliability: How sturdy and durable an External Aquarium Pumps is should be an indication of how long it will work out for you.

Romance University always remembers that maintaining External Aquarium Pumps information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding External Aquarium Pumps is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly! We’re here for you all the time. Contact us here. Or You can read more about us to see our vision.

FAQ:

Q: What is the best fish tank pump?

A: 1. Best for 10 Gallon Aquariums – Tetra Whisper. The Tetra Whisper is ideal for use with 10-gallon aquariums. The Whisper pump is reliable and ensures that your fish will get the proper amount of oxygen. It’s efficient and easy to use, and unlike other aquarium pumps, this one is actually relatively quiet.

Q: What is an external water pump?

A: External Pumps. External pond pumps, also known as inline pumps, are designed to sit out of the water. External pumps are more convenient and require less routine maintenance than submersible pumps.

Q: How does an external fish tank filter work?

A: External canister filter is a type of aquarium filter removing water from fish tank through an intake tube, then passes through different filter media inside a canister, then pumped back filtered aquarium water into fish tank through spray bar or spill way. It can be used in saltwater or freshwater aquariums.

Q: What is a fish water pump?

A: A fish tank pump can be either an air pump, for pushing air through an airstone or aeration tubing, or a filter pump, which draws water from the tank through a filter and back into the tank. Air pumps do not require priming. For water filtration pumps, you will need to prime the system to get the water moving.