903 Silent - Air B11 - Life Insurance for Your Fish- Auto/on Battery Powered Air Pump by Penn-Plax.

Automatic . . . Bubbles GO ON when your power GOES OFF!
Fish Saver - aeration is provided even when you're not at home.
Can also be used as a portable pump.

This is the quietest of the 2 battery operated models we carry, but still sounds like an air pump.
Comes with SA-B11 Pump, about 12 inches Silicon Tubing and Air Stone. Plugs into standard 110 outlet. This pump will only operate when there is NO A/C electricity. Unplug it from the wall to test batteries. Requires two "D" Batteries - not included, for use.

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