whats the best way to swap a filter? - Tropical Fish Keeping - Aquarium fish care and resources
 
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post #1 of 4 Old 05-24-2011, 03:17 AM Thread Starter
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whats the best way to swap a filter?

hey guys,

I have a 20 litre tank (5 gallon) and it will be most likely a CRS tank. I have a "aquatopia internal filter 100" in at the moment, tank has been setup for 3 weeks and is cycled. I have decided I want more room in the tank so I ordered a mini cannister filter called a "Resun CY20 external 3in1" off the net for $17 bucks! What is the best way for me to swap the filters over? Do I set up the cannister filter and run it for a week with the internal still in the tank? Or squash the filter media from the internal into the new one or just swap it straight over?

Also, I currently have 4 cardinals in there. Will they eat my crystal red shrimp when I put them in? I had the cardinals in another tank with Cherries and they didnt eat the adults, They also bred and as far as I could tell I dont think they ate any baby cherries.

Thanks.
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post #2 of 4 Old 05-24-2011, 03:22 AM
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If it was me I would run both filters for a couple of weeks before you take out the current one you are using. That way it insures that the bacteria has formed in the new filter. I can't answer the second question. I have no experience or knowledge of those sorry.
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post #3 of 4 Old 05-24-2011, 03:35 AM Thread Starter
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Quote:
Originally Posted by Boredomb View Post
If it was me I would run both filters for a couple of weeks before you take out the current one you are using. That way it insures that the bacteria has formed in the new filter. I can't answer the second question. I have no experience or knowledge of those sorry.
No worries, Cheers.
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post #4 of 4 Old 05-24-2011, 05:38 AM
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I would run it for 4 weeks to be on the safe side so you have a good bacteria colony. I recently did the same thing when I went up to a larger tank, in the end I left my my smaller filter running along side the bigger one and the water is beautifully clear, so I think I'll leave them both there!
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