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At AquaCave, we offer some of the best selection & best prices on external and in-line water pumps for you marine, reef, and freshwater aquarium.
External Aquarium Water Pumps consist of an external motor which pulls water from the aquarium or sump and pushes it out the outlet. This is the most common type of water pump for an advanced freshwater, marine and reef aquariums. External water pumps are more powerful than submersible pumps and help keep the heat out of the water. Commonly used as return pumps to feed filter water back to the aquarium and to drive aquarium equipment such as canister filters, protein skimmers, uv sterilizers and specialty filters.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

external Aquarium Water Pumps

Eheim Universal Water Pumps:
These versatile water pumps are perfect for returning water from sump filter systems and can be used either submersed in the water, or located in-line outside of the sump (less heat transfer).
Highly energy efficient with silent operation, these dependable pumps will give years of operation.
* Low energy, less heat transfer to water
* Can be used submerged or in-line
* Silent operation
* Ceramic shaft, suitable for fresh or salt water
* Threaded hose barbs for intake/outlet included
* Optional screen prefilter intake

- 1046 Universal Water Pump by Eheim
- 1048 Universal Water Pump by Eheim
- 1250 Universal Water Pump by Eheim
- 1260 Universal Water Pump by Eheim
- 1262 Universal Water Pump by Eheim


- Blue Line External Aquarium Water Pumps : These pumps are designed and built by a former chief engineer from Iwaki-Japan. They feature the same flow curves, high head pressure, low noise, and reliability that have made Iwaki the best magnetic drive pumps available. The BlueLine HD pumps are even slightly quieter than Iwaki, with a lower frequency. These units are yellow rather than green and carry a full 2 Year parts and labor guarantee.
- Gen-X External Aquarium Water Pumps : Gen-X External Aquarium Water Pumps come with non-corrosive polypropylene housing and non-leak sealless pump. Gen-X External Aquarium Water Pumps are highly efficient, economical type pumps with single phase motor with thermal protector.
- MD External Aquarium Water Pumps : MD external aquarium water pumps are widely used in the aquarium industry. These magnetic pumps offer the capacity of pumping a high valume of water at an extremly low price. MD aquarium water pumps pumps have magnetic drive with ceramic shafts, so they are compatible in both fresh and saltwater.
- Iwaki External Aquarium Wate Pumps - Japanese Motors : Iwaki Walchem magnetic drive pumps will run longer, quieter and cooler than any traditional mag drive. Extraordinarily high efficiencies make these pumps the clear choice in almost every process, recirculation or transfer application.

Mag Drive Aquarium Water Pumps : Mag Drive pumps may be used externally or submersed. Top quality features such as ceramic shaft, heavy duty copper motor windings, standard NPT ports, internal o-ring seals and ceramic/magnetic impellers make Mag Drive pumps reliable and consistent.

Sequence Reeflo External Aquarium Water Pumps
Sequence Pumps, the leading manufacturer of efficient pumps for the water garden industry for over 25 years, introduces its Reeflo product line dedicated to aquarium and marine applications.
With a combination of energy efficient motors, heavy duty silicon carbide seals, stainless steel fasteners, and UV resistant translucent PVC housing, you can confidently choose the REEFLO product line for your aquarium needs.

- Sequence Reeflo SNAPPER External Water Pump : Sequence Reeflo Snapper Applications:Perfect for 50-250 gallon closed loop systems where Low Watt Draw (approximately 100 watts), quiet operation and low heat transfer is important.
Sequence ReefFlo Snapper Specifications:
- Ports are 2in FNPT suction and 1-1/2in FNPT discharge.
- Flow:2500gph
- Max. Head: 11ft (4.5psi)
- Power: 0.8amps/96Watts
- Units are pre-wired with an 8ft cord and molded 110V plug.
- 3 Years Manufacturer's Warranty.

- Sequence Reeflo DART External Water Pump : Sequence Reeflo Dart is the quietest pump on the market. Ideal applications for this unit are aquariums 100- 200 gallons.
Sequence Reeflo Dart is great for close loop reef systems requiring high turnover.
This unit is rated for moderately low head pressure and a maximum flow rate of 3600gph, shut off head of 12 feet and a maximum wattage of 160/ 1.4 amps.
Our low speed, 1/8 HP motors have extremely low heat transfers.
Sequence ReefFlo Dart Specifications:
- Quiet operation
- Minimal heat transfer
- Less than half the watt draw of comparable submersible pumps!
- Ports are 1.5" FNPT suction and 1.5" FNPT discharge.
- Units are pre-wired with an 8' cord and molded 115V plug.
- Housing is molded GLASS REINFORCED POLYPROPHELENE
- 3 year manufacturer's warranty

- Sequence Reeflo BARRACUDA External Water Pump : Sequence Reeflo Barracuda is our energy efficient entry level pump for applications requiring moderate head pressure and high flow rates.
Ideal applications for this unit are 180-350 gallon tanks with sump return systems requiring a minimum of 10 feet static head.
This unit is rated for a maximum flow rate of 4,500gph, a shut off head of 18 feet, and maximum wattage of 325/ 2 amps.
Using a 1/4 horsepower Baldor TEFC Motor manufactured in the USA.
Sequence ReefFlo Barracuda Specifications:
- Less than half the watt draw of comparable submersible pumps
Ports are 1.5" FNPT suction and 1.5" FNPT discharge or 2" Slip on both.
- Units are pre-wired with an 8' cord and molded 115V plug.
- Housing is molded of GLASS REINFORCED POLYPROPHELENE
- Rebuildable motors.
- 3 year manufacturer's warranty

- Sequence ReefloHAMMERHEAD External Water Pump : Sequence Reeflo Hammerhead is the most powerful pump in its class. This energy efficient pump is ideal for 300-500 gallon aquariums with sump return systems requiring a minimum of 15 feet static head.
This unit is rated for a maximum flow rate of 5800gph, a shut off head of 23 feet and maximum wattage of 350/ 3 amps.
Using a 1/3 horsepower Baldor TEFC Motor manufactured in the USA.
Sequence ReefFlo Hammerhead Specifications:
- Less than half the watt draw of comparable submersible pumps
- Ports are 1.5" FNPT suction and 1.5" FNPT discharge or 2" Slip on both.
- Units are pre-wired with an 8' cord and molded 115V plug.
- Housing is molded of glass reinforced polyprophelene
- Rebuildable motors
- 3 year manufacturer's warranty.

- Sequence TARPON External Water Pump : Sequence UNO Series was developed in response to the need for quiet, low watt draw pumps that serve the high pressure requirements of 50-200 gallon aquarium tanks.
- For external use - NOT Submersible! Saltwater Safe!
- Quiet operation
- Minimal heat transfer
- Less watt draw than comparable mag drive pumps!
- Ports are 1" adapted FNPT suction and 3/4" FNPT discharge.
- Units are pre-wired with an 8' cord and molded 115V plug.
- Housing is molded GLASS REINFORCED POLYPROPHELENE.
- 3 year warranty
Sequence Uno Tarpon Specifications:
- Max Head: 23'
- Flow: 1,250 USgph @ 4'
- Inlet: 1" FNPT
- Outlet: 3/4" FNPT
- Watts: 175W
- Pressure Rated: Yes
- Drive: Direct

- Sequence WAHOO External Water Pump : Sequence UNO Series was developed in response to the need for quiet, low watt draw pumps that serve the high pressure requirements of 50-200 gallon aquarium tanks.
- For external use - NOT Submersible! Saltwater Safe!
- Quiet operation
- Minimal heat transfer
- Less watt draw than comparable mag drive pumps!
- Ports are 1" adapted FNPT suction and 3/4" FNPT discharge.
- Units are pre-wired with an 8' cord and molded 115V plug.
- Housing is molded GLASS REINFORCED POLYPROPHELENE.
- 3 year warranty
Sequence Uno Wahoo Specifications:
- Max Head: 32'
- Flow: 1,450 USgph @ 4'
- Inlet: 1" FNPT
- Outlet: 3/4" FNPT
- Watts: 265W
- Pressure Rated: Yes
- Drive: Direct

- Sequence MARLIN External Water Pump : Sequence UNO Series was developed in response to the need for quiet, low watt draw pumps that serve the high pressure requirements of 50-200 gallon aquarium tanks.
- For external use - NOT Submersible! Saltwater Safe!
- Quiet operation
- Minimal heat transfer
- Less watt draw than comparable mag drive pumps!
- Ports are 1" adapted FNPT suction and 3/4" FNPT discharge.
- Units are pre-wired with an 8' cord and molded 115V plug.
- Housing is molded GLASS REINFORCED POLYPROPHELENE.
- 3 year warranty
Sequence Uno Marlin Specifications:
- Max Head: 37'
- Flow: 1,950 USgph @ 4'
- Inlet: 1" FNPT
- Outlet: 3/4" FNPT
- Watts: 310W
- Pressure Rated: Yes
- Drive: Direct

 


- Sequence SW External Aquarium Water Pumps : Sequence SW External Aquarium Water Pumps uses Less than half the watt draw of comparable submersible pumps.
Sequence SW pumps come with dry run resistant mechanical seals and stainless steel hardware.

External Water Pump, Inline Aquarium Water Pumps

Red Dragon Deluxe Water Pumps: Red Dragon pumps are the most efficient centrifugal pumps for internal and external use available in the Aquatic hobby today!
Using the highest quality components and patented technology they produce very high flow, and consume less energy than most competing products.
The optimized pump head geometry combined with patented drive technology and start-up electronics enables the pump to produce a high flow with very low energy consumption. This will also ensure silent operation and no start- up issues, and with less heat generation. All RED DRAGON pumps are designed to use in ultra- silent ‘lifestyle applications’ where no noise is tolerated.
Utilizing our patented Anti Calcium bypass technology, water is pushed from pump-head to the back of magnet to cool down the shaft, bearings and magnet. In return less calcification occurs, which increases the life of the pump and reduces the need for frequent maintenance. This feature is especially useful in SPS or other systems in demand of high Calcium or using Kalk dosing.
Unlike other centrifugal pumps using Ceramic bearings, only the best quality Silicon Carbide bearings are used which will last much longer than other materials, and smoother contact between shaft and bearing will produce less noise. Models RD10 and RD12 also feature Titanium motor shafts, and ALL metal components used are high grade Titanium and absolutely saltwater resistant.
EXCLUSIVE FEATURES
* Low Energy Consumption
* High flow, up to 3170GPH!
* Cool to the touch
* Submersible or external use
* Extremely silent
* No start- up issues!
* CNC pump head produced from a solid PVC Block
* Highest Quality German magnets
* Silicum Carbide bearings
* Anti Calcium Bypass
* Ozone safe
* Titanium Screws
* Easily disassembled for cleaning and maintenance
* CNC inlet and outlet with built in O-ring for direct connection of unions
* All parts can be disassembled for ease of maintenance



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