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emc7 · 12-03-2007, 07:02 PM

I keep my cartridges longer than suggested. I just rinse and return. The carbon stops working after a month, but it still is a good bio. substrate. Fresh carbon is helpful but not essential and like many fishkeepers, I'm kind of cheap.

12-03-2007, 07:02 PM	#9
emc7 Senior Member Join Date: Jul 2005 Location: Johns Creek, GA Posts: 3,607	I keep my cartridges longer than suggested. I just rinse and return. The carbon stops working after a month, but it still is a good bio. substrate. Fresh carbon is helpful but not essential and like many fishkeepers, I'm kind of cheap.