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Symbiosis · 05-06-2006, 12:15 PM

I usually change mine every 3-4 weeks. Not really because I think the carbon is 'full' but more because the filter pad is saturated with gunk.

05-06-2006, 12:15 PM	#11
Symbiosis Tank Watcher Join Date: Mar 2006 Location: Boise, ID Posts: 39	I usually change mine every 3-4 weeks. Not really because I think the carbon is 'full' but more because the filter pad is saturated with gunk. __________________ If I only had a 300 gallon tank...