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Save an extra 20% off your entire order with coupon code: Bloom20
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**May not be combined with any other offer.
Code expires Wednesday, April 30th 2014
The Penn Plax Check Valve Air Filter is perfect for use with all aquarium air pumps. The Penn Plax Check Valve Air Filter stops water from siphoning into your air pump in the event of electrical power failure or when removing filters from aquariums.
The check valve's aquarium-side connector can fit standard or mini airline tubing. Installs easily between air pump and airline tubing.