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At AquaCave, we offer some of the best selection & best prices on External Aquarium Water Pumps, 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 water pumps are usually installed at the floor level next to the sump. External (in-line) pumps are recommended for larger aquariums 100 gal or more in volume. External water pumps will usually give you higher pressure and flow but may be a little louder comparing to submersible pumps.

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  • Dolphin Diamond Amp Master 6250 Saltwater Pump Dolphin Diamond Amp Master 6250 Saltwater Pump

    DOLPHIN PUMPS

    Dolphin Diamond Amp Master 6250 Saltwater Pump

    Dolphin Diamond Amp Master 6250 Saltwater Pump Designed to handle the toughest environments with the reliability of a magnetic drive pump MINUS all the drawbacks, such as heat transfer, noise, and energy consumption. All our Dolphin Diamond Amp Master...

    $709.00
  • Iwaki MD-70RLT Water Pump, Japanese Motor Iwaki MD-70RLT Water Pump, Japanese Motor

    Iwaki

    Iwaki MD-70RLT Water Pump, Japanese Motor

    Iwaki MD-70RLT Water Pump, Japanese Motor Magnetic water pumps. Magnetic driven. Sealless pumps for use on fresh or saltwater aquariums.Low heat exchange and quiet in operation. Highly durable design. RLT pumps are for pressure applications. RLXT pumps...

    $649.00
  • Dolphin Diamond Amp Master 4750 Saltwater Pump Dolphin Diamond Amp Master 4750 Saltwater Pump Dolphin Diamond Amp Master 4750 Saltwater Pump

    DOLPHIN PUMPS

    Dolphin Diamond Amp Master 4750 Saltwater Pump

    Dolphin Diamond Amp Master 4750 Saltwater Pump Designed to handle the toughest environments with the reliability of a magnetic drive pump MINUS all the drawbacks, such as heat transfer, noise, and energy consumption. All our Dolphin Diamond Amp Master...

    $629.00
  • Iwaki MD-55RLT Water Pump, Japanese Motor Iwaki MD-55RLT Water Pump, Japanese Motor

    Iwaki

    Iwaki MD-55RLT Water Pump, Japanese Motor

    Iwaki MD-55RLT Water Pump, Japanese Motor Magnetic water pumps. Magnetic driven. Sealless pumps for use on fresh or saltwater aquariums.Low heat exchange and quiet in operation. Highly durable design. RLT pumps are for pressure applications. RLXT pumps...

    $580.00
  • Iwaki MD-40RLT Water Pump, Japanese Motor Iwaki MD-40RLT Water Pump, Japanese Motor

    Iwaki

    Iwaki MD-40RLT Water Pump, Japanese Motor

    Iwaki MD-40RLT Water Pump, Japanese Motor Magnetic water pumps. Magnetic driven. Sealless pumps for use on fresh or saltwater aquariums.Low heat exchange and quiet in operation. Highly durable design. RLT pumps are for pressure applications. RLXT pumps...

    $505.00
  • Blueline 100 HD Water Pump - 1990 gph Blueline 100 HD Water Pump - 1990 gph Blueline 100 HD Water Pump - 1990 gph Blueline 100 HD Water Pump - 1990 gph Blueline 100 HD Water Pump - 1990 gph

    BlueLine

    Blueline 100 HD Water Pump - 1990 gph

    Blueline 100 HD External Aquarium Water Pump by Pan World. 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...

    Was: $472.99
    Now: $447.99
  • Reeflo Dart / Snapper GOLD Hybrid Water Pump Reeflo Dart / Snapper GOLD Hybrid Water Pump Reeflo Dart / Snapper GOLD Hybrid Water Pump Reeflo Dart / Snapper GOLD Hybrid Water Pump Reeflo Dart / Snapper GOLD Hybrid Water Pump

    Reeflo

    Reeflo Dart / Snapper Gold Water Pump - 2600/4200 gph

    Reeflo Dart / Snapper GOLD Hybrid Water Pump The Reeflo Super Dart-Snapper HYBRID pumps have conversion kits that allow you to switch between models thereby adjusting flow and watt draw. This increases the flow range allows you to adjust the pump...

    $429.00
  • Blueline 70 HD Water Pump - 1750 gph Blueline 70 HD Water Pump - 1750 gph Blueline 70 HD Water Pump - 1750 gph Blueline 70 HD Water Pump - 1750 gph Blueline 70 HD Water Pump - 1750 gph

    BlueLine

    Blueline 70 HD Water Pump - 1750 gph

    Blueline 70 HD External Aquarium Water Pump by Pan World. 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...

    Was: $418.99
    Now: $396.99
  • Blueline 55 HD Water Pump - 1100 gph Blueline 55 HD Water Pump - 1100 gph Blueline 55 HD Water Pump - 1100 gph Blueline 55 HD Water Pump - 1100 gph Blueline 55 HD Water Pump - 1100 gph

    BlueLine

    Blueline 55 HD Water Pump - 1100 gph

    Blueline 55 HD External Aquarium Water Pump by Pan World. 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...

    Was: $403.99
    Now: $381.99
  •  Reeflo Dart / Snapper Water Pump - 2400/3700 gph  Reeflo Dart / Snapper Water Pump - 2400/3700 gph  Reeflo Dart / Snapper Water Pump - 2400/3700 gph

    Reeflo

    Reeflo Dart / Snapper Water Pump - 2400/3700 gph

    Reeflo Dart / Snapper Hybrid Water Pump.DART HYBRID comes out of the box as standard DART pump but also include easy to implement SNAPPER conversion kit. SNAPPER kit will take this pump from flow of 3000 gph at 4 ft. / 145 watts to 1900gph at 4 ft...

    $375.00
  •  Reeflo Swordtail Water Pump - 1750 gph
 Reeflo Swordtail Water Pump - 1750 gph

    Reeflo

    Reeflo Swordtail Water Pump - 1750 gph

    Reeflo Swordtail External Water Pump.FeaturesThe SwordTail is our new pressure rated version of the Dart that is perfect for 75-150 gallon tanks. It uses the same motor and pump head but the impeller is customized to allow to flow up to 20' of head...

    $360.00
  • Iwaki MD-20RLT Water Pump, Japanese Motor Iwaki MD-20RLT Water Pump, Japanese Motor

    Iwaki

    Iwaki MD-20RLT Water Pump, Japanese Motor

    Iwaki MD-20RLT Water Pump, Japanese Motor Magnetic water pumps. Magnetic driven. Sealless pumps for use on fresh or saltwater aquariums.Low heat exchange and quiet in operation. Highly durable design. RLT pumps are for pressure applications. RLXT pumps...

    $328.00
  • Blueline 30 HD-X Water Pump - 1110 gph Blueline 30 HD-X Water Pump - 1110 gph Blueline 30 HD-X Water Pump - 1110 gph Blueline 30 HD-X Water Pump - 1110 gph Blueline 30 HD-X Water Pump - 1110 gph

    BlueLine

    Blueline 30 HD-X Water Pump - 1110 gph

    Blueline 30 HD-X External Aquarium Water Pump by Pan World.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...

    Was: $250.99
    Now: $236.99
  • Blueline 30 HD Water Pump - 590 gph Blueline 30 HD Water Pump - 590 gph Blueline 30 HD Water Pump - 590 gph Blueline 30 HD Water Pump - 590 gph Blueline 30 HD Water Pump - 590 gph

    BlueLine

    Blueline 30 HD Water Pump - 590 gph

    Blueline 30 HD External Aquarium Water Pump by Pan World.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...

    Was: $238.99
    Now: $223.99
  • Replacement Impeller for BlueLine 100HD Water Pump Replacement Impeller for BlueLine 100HD Water Pump

    BlueLine

    Replacement Impeller for BlueLine 100HD Water Pump

    Replacement Impeller for BlueLine 100HD Water PumpBlueLine 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...

    $169.99
  • Blueline 20 HD Water Pump - 480 gph Blueline 20 HD Water Pump - 480 gph Blueline 20 HD Water Pump - 480 gph Blueline 20 HD Water Pump - 480 gph Blueline 20 HD Water Pump - 480 gph

    BlueLine

    Blueline 20 HD Water Pump - 480 gph

    Blueline 20 HD External Aquarium Water Pump by Pan World. 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...

    Was: $179.99
    Now: $168.99
  • Replacement Impeller for BlueLine 70HD Water Pump Replacement Impeller for BlueLine 70HD Water Pump

    BlueLine

    Replacement Impeller for BlueLine 70HD Water Pump

    Replacement Impeller for BlueLine 70HD Water PumpBlueLine 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...

    $149.99
  • Blueline 10 HD Water Pump - 175 gph Blueline 10 HD Water Pump - 175 gph Blueline 10 HD Water Pump - 175 gph

    BlueLine

    Blueline 10 HD Water Pump - 175 gph

    Blueline 10 HD External Water Pump by Pan World. 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...

    $103.99
  • Replacement Volute for BlueLine 20HD Water Pump Replacement Volute for BlueLine 20HD Water Pump

    BlueLine

    Replacement Volute for BlueLine 20HD Water Pump

    Replacement Volute for BlueLine 20HD Water PumpBlueLine 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...

    $47.99
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