I'm trying to start a new tank and I had a filter from before that was a 10 gallon filter. My understanding is that filters are just a box that agitates water to create flow and holds the beneficial bacteria. So my question is, if there's sufficient bacteria in the filter, and if I get an air pump to put oxygen in the tank and create the agitation, can I just use this filter? I don't see why it wouldn't work so if there is any problem in doing so please tell me! I'm planning on using some media from my other tank to instantly cycle this one.