Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site harvard.ARPA Path: utzoo!linus!philabs!cmcl2!harvard!sasaki From: sasaki@harvard.ARPA (Marty Sasaki) Newsgroups: net.pets Subject: aquarium aeration Message-ID: <455@harvard.ARPA> Date: Sat, 26-Oct-85 19:05:21 EST Article-I.D.: harvard.455 Posted: Sat Oct 26 19:05:21 1985 Date-Received: Thu, 31-Oct-85 06:29:36 EST Distribution: net Organization: Harvard Science Center Lines: 15 The common myth that bubbling air into an aquarium adds oxygen to the water is not true. Almost no gas exchange happens with bubbles. All of the gas exchange happens on the surface of the water. This is why tanks with lots of surface area are "better" for your fish. You can encourage the gas exchange by agitating the surface of the water. Actually, bubbling air will help with the oxygen exchange because it will cause the water in the tank to move around more (sort of like having a little pump. -- ---------------- Marty Sasaki net: sasaki@harvard.{arpa,uucp} Havard University Science Center phone: 617-495-1270 One Oxford Street Cambridge, MA 02138