I have 2 filters in my 75 gal
tank. A HOB
Marineland 350B filter. I also got the extra carbon filter bags for it, it says to change those every month. Is that necessary?
I also have a Marineland C-360 Canister Filter that has several different filter media chambers. It says to change the polishing floss pad every month, it then has the ceramic rings (don't change), bio balls (don't change), Carbon filter bags (says to change every month), and the filter foam is last (change every ninth week). Can some of these media go longer than others and does it matter if you leave some of them in longer?
Also I believe someone mentioned that you can take out the bio balls and replace that compartment with more ceramic rings...is that a good idea?