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View Full Version : How long to start a new sponge filter?


giroux68
08-13-2003, 10:42 AM
If you already have an established tank with a hang on the back type filter on it and put a hydro sponge type into the tank, about how long would it take to colonize this new filter?
Carol_Roberts
08-13-2003, 12:31 PM
Two weeks or so
giroux68
08-13-2003, 02:49 PM
That is shorter than I would have thought. Thanks for the info.