I have an Aqueon Quietflow Pro 10, and the filter cartridge is now causing the water to overflow and bypass the cartridge. I already tried to put the old cartridge just in the filter tank along with a new cartridge in the correct position, but they don't both fit. I had a thought, but I wanted to run it by the more experienced fish keepers here before doing anything. If I cut open the old cartridge and remove the carbon, can I put it back in the filter tank with a new cartridge in place without messing anything up with my cycling? I don't want to lose out on all the good gunk that's built up, and I also don't want to have an ineffective filter running. I've been having setbacks while cycling as it is, and I don't want to contribute more to that. Any thoughts and help would be appreciated.