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Old 10-17-2010, 05:07 AM   #1
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how to change to another filter?

hi, i was just wanting some advice on the best way to change to a another filter in my tank, at the moment i have and internal filter but i want to change to an external. what is the best way to go about this without the risk of killing my fish?

thanks
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Old 10-17-2010, 05:24 AM   #2
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You can put a sponge from the internal into the canister. That will help seed the filter. And there are some products that help speed up the cycle eg "Safe Start". Not sure how effecive they are though?
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Old 10-17-2010, 06:23 AM   #3
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would it be better to transfer all the internal filter sponges (2) and the ceramic rings over and in theory it would be still like having not changed anything. (i know that might sound silly)
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Old 10-17-2010, 07:18 AM   #4
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That would be ideal.

Or just run the canister along with the internal and remove the interal later.
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Old 10-17-2010, 07:29 AM   #5
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how long would i keep them both running together for.
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Old 10-17-2010, 08:07 AM   #6
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6-8 weeks to be sure. You can squeeze out the sponges from the internal into the canister filter media to give it a head start too.
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Old 10-17-2010, 12:34 PM   #7
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Yep squeeze out the old sponges then leave the old filter running for at least a month to be sure. Test the water daily after the removal to ensure the new filter is coping.
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