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**stevem** · February 26th, 2013, 09:26 PM

they do add oxygen by breaking the water surface, so if you like the look use them as far as oxygen is concerned any hang on filter or wetdry, or anything filter that breaks the water surface will add more oxygen.

February 26th, 2013, 09:26 PM	#6
stevem Super Moderator Join Date: Aug 2008 Location: Brooklyn Posts: 687 Rep Power: 34	they do add oxygen by breaking the water surface, so if you like the look use them as far as oxygen is concerned any hang on filter or wetdry, or anything filter that breaks the water surface will add more oxygen.