Originally Posted by powermatt5000
Bruinsbro- I thought of that to. My marineland 350 filter has slots for up to 4 filter cartridge/pads. I tried changing them out on a rotation so there's always at least 1 old one in there. How often do you recommend changing the filter cartridges?
I actually don't recommend changing them at all, I still have ones that are a year old running in my AquaClear HOB
. To clean them, all you need to do is to get a bucket of old tank water when you're doing a PWC
and rinse and slosh all the crud off it.
If it's ABSOLUTELY necessary for you to change them, then just take them out one each month while keeping some old ones in there, let it run for a month, and then take the old one out.
Hope this helps!