Little Giant 3-MDQX-SC Aquarium Pump 581507 curves
Little Giant 3-MDQX-SC Aquarium Pump 581507

3-MDQX-SC Aquarium Pump, 1/15 HP, 115V

Little Giant

Brand: Little Giant

Mfr Part#: 581507

Model: 3-MDQX-SC

UPC#: 010121815070

Availability: In Stock
Usually ships: Today, if ordered by 3pm
Qty Price
$205.95 / each & Free Shipping
  • Description
  • Literature
  • Reviews
  • FAQs (1)

Little Giant 3-MDQX-SC (581507) is a Magnetic Drive Aquarium Pump 1/15 HP, 115V, 6' power cord - SC Quarium Series for semi-corrosive salt solutions and chemicals, designed for in-line saltwater and freshwater aquarium circulation and filtration applications.

Little Giant 3-MDQX-SC has 1" MNPT discharge and 1" FNPT Intake with head capacity of 14'. Little Giant 3-MDQX-SC 'Quarium Series features a leakproof, seal-less magnetic drive and a more quiet operation for freshwater and saltwater aquariums. The MDQX model is best suited for free-flow setups, where water encounters very little back pressure. The Volute, magnet housing and impeller of 3-MDQX-SC are glass-filled polypropylene for excellent chemical resistance. The ceramic shaft and thrust washers are 99.5% pure alumina provide unparalleled wear and trouble-free service. The O-ring seals are nitrile (Buna-N). Little Giant's powerful 1/15 HP thermally protected, totally enclosed, motor delivers 1100 GPH of fluids at 1' total dynamic head. Little Giant 3-MDQX-SC has been factory-tested for capacity, control operation and electrical continuity to assure maximum performance and safety.


  • Thermally protected motor with 3-prong molded plug and 6' power cord
  • Corrosion resistant to salt solutions and many other semi-corrosive fluids
  • Inline only (Non-submersible);
  • Freshwater or saltwater;
  • Includes 6' power cord;
  • Magnetic Drive;
  • 1" FNPT Intake;
  • 1" MNPT Discharge;
  • 1000 GPH @ 3';
  • Listings: UL, CSA.

Technical Specifications:

  • Horsepower: 1/15 HP;
  • Flow: 1100 GPH @ 1';
  • Cord Length: 6';
  • Shut Off: 14';
  • Voltage: 115 V;
  • Hertz: 60 Hz;
  • Amps: 0.9 A;
  • Watts: 100 W;
  • Weight: 9.25 lbs;
  • Height: 5.3";
  • Width: 4";
  • Length: 11.9".


1 year manufacturer's warranty.
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Can I use this pump under my tank if it is not drilled? Meaning the intake and output hose are in the tank with my pump under the tank will it suck the water out and put it back in? If so how do I prime it? Thanks
Read 1 answer
To determine maximum height to which the liquid can be pumped, refer to the pump curve chart (click on the small thumbnail image below the product picture). For priming instructions, refer to the product manual.
Answered on 3/4/2013 by PexUniverse Customer Service
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