Aquarium filter sock muffler 4 inch

thingiverse

Mufflers effectively dampen the noise emanating from 4-inch aquarium socks in sump units. This setup is best suited for low-flow systems, where water circulation rates are typically under 800 gallons per hour through a single sock. However, if you're dealing with higher flow rates exceeding 800 gallons per hour, larger hole sizes will be necessary to prevent excessive noise generation.