I have 2 filters on my 20 long. My ac 30, which I have the foam pad, charcoal bag and biomax bag. I do make my own charcoal bag and replace that every month or so. My tank was recently cycled to I am pretty familiar with cleaning the media in tank water and everything and not change it all at once. I also have a quietflow 10. This has the cartridges and specialty filter pad area. Has anyone switched and stopped using these products and made your own? I don't have any of the specialty pads left as those it is hard to just clean and I ran out. The cartridges I have 3 or 4 left and I just swish them. It is so much easier to clean the AC product cause I can actually squeeze it in old tank water, whereas the cartridge has the plastic inside so once it gets to a point I have to replace it. So if anyone has any ideas, products, pics on how to convert my quietflow that would be great!