Replacing filter media

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Paxdaddy

Aquarium Advice Freak
Joined
Jan 29, 2012
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377
Location
Michigan
So I put new filter cartridges in my penguin350 hob filter. I've had the old ones in there for over 6 months and have been rinsing them. They are starting to fall apart. How long should I leave them in with my new ones to build up the BB on them?
 
I've heard / read 2 weeks minimum ... but I'd say give it a month ... that should seed enough bacteria to your new cartridges.
 
jcolon said:
I've heard / read 2 weeks minimum ... but I'd say give it a month ... that should seed enough bacteria to your new cartridges.

Thanks a lot! I guess there really is no rush. Was just curious.
 
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