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Backup Pump - Rule 25DA bilge pump 12 V, 500 GPH - with hose and fittings

SKU 112/302
A great little backup pump for fish tanks up to 3000 L (~800 Gal). Ideal for use with any type of backup switch. Comes with extended, waterproof leads so you can safely put it deep into your fish tank. Also includes 1.8 m (~6') of hose, and fittings. . . . read more

Selected Size/Selection: One Size

One Size
$73.90 (AUD)

Out of Stock



Product Details

Fish must have oxygen, so you need a backup system that will keep the air up to them.  They can start to suffer in as little as 20 minutes, and die within an hour, without adequate oxygen.  Install a backup system!

If your main pump stops, this neat little backup pump can provide emergency water movement and aeration to the fish tank when properly installed.  It needs to be attached to a backup switch that will activate it automatically.  

Good quality pump - Rule bilge pump model 25DA, 12 Volt, 500 Gph.

  • Submersible
  • Ignition protected
  • High efficiency, with low-amp motor
  • Non burn-out when dry
  • Stainless steel shaft
  • Includes back-flow preventer

As well as the pump, this kit also includes 1.8 m (~6') of 19 mm (3/4") hose and various fittings, to save you having to figure out where to get it all yourself!  Use whichever fittings are suitable for your own set-up.

To make it safe and easy to put the pump deep into the fish tank, we add an extra metre (~3.3') of waterproof electrical leads, so you end up with 1.7 m (5'7").  This gives you great options for where you can put the pump!

The best location for the pump is right on the bottom of the fish tank.  Run a hose from the pump and place the hose outlet above the waterline of the fish tank, aiming it back down towards the water.  When the pump runs, a jet of water from the hose will create bubbles, adding oxygen to the water.  Vital for the fish!  In tanks up to about 3000 L (~800 Gal), this should provide enough emergency aeration to keep your fish alive.  But restore the regular air flow as soon as you can!

Taking the water from the bottom of the tank also creates water ciculation, with stale water being replaced by fresher water.  However, there will eventually be a build up of ammonia in the water, so get the main water flow running again as soon as possible.

Don't risk your fish!  Install a backup system today!

Pump specs

  • 12 V DC
  • Max. flow 1893 Lph (500 Gph)
  • Amp draw - 1.6 A at max flow
  • Fuse needed - 4A (not included)
  • Water outlet size - 19 mm (3/4")
  • Includes instruction booklet with installation and maintenance tips


You  can also get this pump on its own, or in a backup kit with our electrical Backup Switch.

Additional Information


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