Undergravel filters?

They are old technology that used the substrate as the filter and allowed for all of the beneficial bacteria to grow in. The problem is that any fish that like to dig will ruin it, and it also only does biological filtration compared to mechanical and chemical like other filters can do in a fraction of the size.

Those filters seem to generally be a pain. I dislike needing to clean them frequently, with the possibility of needing to replace them often.