I’m looking to restart my grandmas AIO aquarium and looking to add a filter cup with a holder to help collect some of the detritus since there’s no mechanical filtration right now. The problem is it’s a small area! If there is a hob sock holder I could use a 2.75in filter sock on that would work or just a cup/holder combo. Let me know if someone thinks they could make something that would work! Thank yall!