4" Filter Cup

thingiverse

This is a custom-designed cup engineered to substitute for standard 4-inch filter socks within a sump system. Currently, I'm utilizing two of these cups, fabricated from PLA material, on my Waterbox 75.2 tank setup. Typically, I load them up with filter floss; however, they also serve as an effective replacement for media bags when used to hold carbon, GFO, or other types of filtration media. To create the cups, I printed them in two separate sections and then joined the rim to the body using a strong adhesive, specifically CA glue.