Oh boy back to being confused again...lol It seems to make sense that if you dont replace now and then they might leek bad things bad into the water, I took mine out today and put it over a clear cup and poured conditioned water over it and shook it out many times and yes the water that came out was very dirty so I kept doing this till the water started o become clear again. I really want to replace is very soon so I was thinking you could cut off the blue part of the filter and put it on top of the new one using a rubberband so you would still have the BB that is on it and it would spread to the new one.
Talk of a mini cycle is scary and this is my first tank and fish ever so I am still learning and willing to learn all I need to know to keep Perseus safe thats why I use Prime and have some live plants also. I think everyones input is welcome and then we can try to put it all together for ourselves and as to what makes the most common sense so keep sharing your experience ....Thanks !!!