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

Building a Hamburger Matten Filter (HMF) for an Aquarium: I had read a lot about the Hamburger Matten Filter - from hereon referred to as HMF. The HMF is said to: - Be a cheap filter to install - Create a (very) large filtering surface for (good) filtering bacteria to do their work and therefore function …

How a HMF (Hamburg matten filter) Works

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HMF Mattenfilter - lots of pictures and FAQs

The HMF – What's That? — Seriously Fish

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

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

Hamburg mat filter HMF guide - aquaristics

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

DIY (Aquarium) Gravel Cleaner : 4 Steps - Instructables

The HMF – What's That? — Seriously Fish