Well the cartridges I use in my power filters aren't sponge. They are rectangular and have white fiber (I think they call it floss)' and carbon inside. I just cut pieces of sponge that I found at Petco (meant for sponge filter) and cut little pieces and laid it down on top of my filter where the...
I have a 6 week old Aqeuon 2.5 gallon mini bow with an aqueous power filter. I am finally seeing my ammonia levels drop, so I think my tank is nearly cycled. I have two questions.
1) when I replace the filter cartridge, will I lose all or most of my beneficial bacteria that has built? If so, if...