Penn Plax Silent Air Aquarium Air Pumps are the simple solution to powering airstones, aquarium ornaments, protein skimmers or other air-powered devices in your aquarium. Simplicity and quiet operation combine with high performance and reliability for a variety of aquarium aeration functions.
I almost bought one from a local pet store. Liked that rebuild kits were offered for sale for this pump. Wanted to see how much air output there was. Salesman plugged it in and placed an open end air tube in a tank. The air bubbles were very weak, very weak. Would not take one for free!
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