03-24-2011, 10:46 PM
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Originally Posted by Cassandra90
What do you mean by pump?
Posted via Mobile Device
She probably means filter. You can put a sponge type medium in most filters. The ceramic rings are also kept in a mesh type bag, and help create a place for the healthy bacteria. You never really need to change them, just rinse them once a month in old tank water.
If you have a whisper filter (I'm only assuming that is what you could have) you can still use a sponge medium with ceramic rings or whatever they're called. Hope that helps.