I set up my tank around the end of september and it finished cycling around christmas time, but its now near the end of january and I havent cleaned the filter media yet.

So ive decided im going to do it this week, but I was wondering if I needed to rinse all the media or just some of it? In the filter I have a layer of foam pads, a basket of white balls and 2 baskets of white rings.

Im really paranoid im going to rinse them too much and damage the BB