DIY Hamburg Matten Filter : r/PlantedTank

Building a Hamburger Matten Filter (HMF) for an Aquarium : 4 Steps - Instructables

Seachem Flourite is a specially fracted stable porous clay gravel for the natural planted aquarium. Its appearance is best suited to planted aquaria, but may be used in any freshwater aquarium. Flourite is not chemically coated or treated, will not alter the pH of the water and is good for the life of the aquarium.

Seachem Flourite Fish & Aquatic Life Aquarium Substrate - 15.4 lb bag

Hydrodynamic Mattenfilter – Aqua-Crylic

The Matten Filter

How To Make a Basic HMF (Hamburg Matten Filter) for Shrimp Tanks

People say you can't make a nice aquascape with a sponge filter : r/ PlantedTank

Hamburg Matten Filter

Filter foam barrier : r/paludarium

Building a Hamburger Matten Filter (HMF) for an Aquarium : 4 Steps - Instructables

How to Install Corner Hamburger Mattenfilter (HMF) in Aquarium