The title pretty much sums it up. Do I need to add/replace any materials to this filter to keep it running my tank healthily? I've noticed on the inside of my intake tube there is a brownish substance (algae?) building up a good bit. I also have a Penguin 200 bio wheel on my 40g and understand that I need to rinse the pad in tank water during water changes.

Just asking because I plan on getting a really messy fish soon, the hairy puffer.